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Callum

@CallumMckeefery

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CEO & founder of & . Board Member of AppHub. I invest in finding cures for rare mitochondrial diseases.

Leicester, Irvine, London
Joined June 2010
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@CallumMckeefery
Callum
2 years
My mum owns a small café in Leicester. Her electricity bill has just jumped from £10k ($12k) a year to £55k ($64k) a year. She is working out her options but more than likely she will be forced to close.
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@CallumMckeefery
Callum
2 years
@dillon_smart asleep at the wheel
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@CallumMckeefery
Callum
2 years
@africatechie @Archee_Bro All they will find it a boarded up café. I get what you mean though.
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@CallumMckeefery
Callum
2 years
How do you politely tell someone who asks for a call without context ‘No’ without burning 🔥 bridges.
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@CallumMckeefery
Callum
2 years
I posted earlier about my mums electricity going from £10k to 55k a year at her café. Here is her renewal bill. How are businesses going to survive? 15p > 81p kWh
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@CallumMckeefery
Callum
3 months
Love this car. It’s not expensive or fast. But wow it’s beautiful 😍 I get more compliments and nods of appreciation in this than anything else Iv ever owned. It’s a one owner car. Last owner was, the one and only Ernie Wise. @AutoPap @hjwakerley @ListerLawrence
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@CallumMckeefery
Callum
2 years
This is the hardest announcement I’ve ever had to make. So here goes… has merged with Apphub in a deal worth over $72m.
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@CallumMckeefery
Callum
1 year
I’m the ceo of but in my spare time I build equipment that helps with my son’s therapy. Most special needs equipment is daylight robbery $$$ Example: the cage I’m using in this video is over $5k 🤯 I manage to recreate it with improvements for $350.
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@CallumMckeefery
Callum
1 year
I feel a 100lbs lighter. The FDA has finally approved a drug that has the potential to help my son and 1,000s of similar children with rare mitochondrial deceases. We still have a long road ahead of us. But, today it’s like the sun has came out from behind the clouds 🥲
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@CallumMckeefery
Callum
1 year
Obvi recently switched to Reviews•io 👀 The before and after.
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@CallumMckeefery
Callum
2 years
We just hit 300 reviews on Shopify App Store. Whoop Whoop!
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@CallumMckeefery
Callum
2 years
British entrepreneur of the year award goes to… 🤣
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@CallumMckeefery
Callum
2 years
@Archee_Bro Because it is a commercial business their is no price cap like what’s in place for homes.
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@CallumMckeefery
Callum
2 years
The co-founder of Yotpo has repeatedly said that Reviews∙io is not a 'Real Business". TBH his condescending 💩attitude has gotten under my skin. It got me thinking what is a 'Real Business'? and are we a 'Real Business'? Please comment & retweet
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@CallumMckeefery
Callum
2 years
@aidandunphy @Opus_Energy No cheaper rate. We have spent hours on it.
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@CallumMckeefery
Callum
2 years
This is the hardest announcement I’ve ever had to make. So here goes… has been acquired in a deal worth over $72m. Full video is on my Linkedin
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@CallumMckeefery
Callum
2 years
Use what your competitors say to fuel the 🔥 inside you. Yotpo: you’re not a real company Me: just sold for $72m without any funding
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@CallumMckeefery
Callum
8 months
Pulled into a petrol station this morning and this amazing De tomaso pantera was sat next to me. I loved this car as a kid. Never seen one in real life. The owner was a true gent. @AutoPap what you think?
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@CallumMckeefery
Callum
2 years
We just made a $180,000 donation to Nationwide Children’s Hospital in Ohio. The donation will help fund research into gene therapy for rare diseases. This year we will be supporting several hospitals and charities that help children with rare diseases. #mito #mitochondrial
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@CallumMckeefery
Callum
2 years
And we are off! For the next 23 days myself and my wife will be running a winter wonderland specifically developed for children and adults with special needs. It’s totally free and all guest get an awesome gift customised to their needs.
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@CallumMckeefery
Callum
1 year
Meet the newest addition to the team. River Mckeefery It’s been a long painful road to get here. River, was the first baby in the world to be tested for the rare genetic decease that my older son has (FDXR). If your doing IVF I’m sending love and strength ❤️💪
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@CallumMckeefery
Callum
2 years
Brillant... whoever did this needs a pay rise.
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@CallumMckeefery
Callum
1 year
They approved it 🙏 I can’t put into words how happy we are. ♥️
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@CallumMckeefery
Callum
2 years
According to a recent @Shopify trend report, the rising costs of acquisition is one of the biggest challenges in eCommerce for 2022. Here’s how I would combat this… 🔥🧵
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@CallumMckeefery
Callum
2 years
Here is the tech we used at to go from zero to a $82m exit. All have free or entry level pricing 👇🏿 Stripe @stripe Pipedrive @pipedrive Intercom @intercom Webflow @webflow Descript @DescriptApp Canva @canva Figma @figma AWS @awscloud
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@CallumMckeefery
Callum
2 years
Last year I customised 10 toy cars 🚙 so they could be enjoyed by children with special needs. Took me 32 days in total to complete the project. Each car was completely different and came with its own challenges. I’m looking at customising beds 🛏 next time 💭
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@CallumMckeefery
Callum
2 years
4am: me trying to figure out how Yotpo raised $436 million dollars.
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@CallumMckeefery
Callum
1 year
If your in saas you know what Elon is feeling. Pure rage 😡
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@CallumMckeefery
Callum
9 months
What a spot @AutoPap
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@CallumMckeefery
Callum
2 months
Wow 😮 @shopify has acquired @gilgNYC Checkout Blocks. Amazing 🤩 Goes to show if you build great tech. You get great outcomes 🚀
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@CallumMckeefery
Callum
1 year
This 🤡 just emailed me. Offering his fake ass review service. Bro, I own the platform... 🤣
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@CallumMckeefery
Callum
6 months
Twitter has changed for the worst. Too many 💩 thought leaders in the DTC & Saas space clearly using external services to write their tweets. It’s so boring. Iv started muting to try and improve my feed.
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@CallumMckeefery
Callum
1 year
I just hit 7k on here 🤯
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@CallumMckeefery
Callum
1 year
Hey Twitter. I need you help 🙏 My 4 month old son is covered in eczema. 80-90% of his body 😢 I have tried switching formula. But nothing seems to be helping. Any advice would be massively appreciated. Please help me by sharing. Someone out there might be able to help.
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@CallumMckeefery
Callum
2 years
Stuck for a headline? Some great advice from @ecomchasedimond
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@CallumMckeefery
Callum
1 year
Today it’s my sons 7th Birthday 🎉 Hudson has a rare mitochondrial disease. Which means he does not walk or talk Most kids on their birthday have parties. This guy had therapy. Why? Because he loves it. He makes me so proud everyday 🙌
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@CallumMckeefery
Callum
1 year
Yotpo has been sending out potentially libelous emails to clients today. Reply below. Should we go legal or turn this nonsense into a marketing campaign 😆
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@CallumMckeefery
Callum
1 year
Just had this exchange in my DMs 😂 I love Twitter.
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@CallumMckeefery
Callum
2 years
My son has a very rare mitochondrial decease (FDXR). Only 53 people have ever been diagnosed. The decease causes low tone amongst other problems. I created Hud this walker out of plumbing parts. Keep fighting!
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@CallumMckeefery
Callum
2 years
Anyone sitting on more unopened emails? 🚂next stop 500k!
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@CallumMckeefery
Callum
1 year
My journey...
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@CallumMckeefery
Callum
2 years
It was a privilege to sit down with @noatuck for our most recent podcast episode. He bootstrapped @ socialsnowball to become the number one affiliate solution in the Shopify App store. Noah is a wonderful person. Furthermore, he is really knowledgeable. Give him a follow.
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@CallumMckeefery
Callum
2 years
I wanted Hudson to experience skateboarding ❤️
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@CallumMckeefery
Callum
1 year
Leaving the house knowing you will be bringing a new baby home is hard to get your head round. It’s going to be a long day.
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@CallumMckeefery
Callum
9 months
I’m so fucking heart broken 💔 right now. The treatment baby Indi Gregory has received from the U.K. government and the NHS. My son has a very similar disease to Indi. Many of the doctors that have treated Indi have also treated my son. The level of care given by so called
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@CallumMckeefery
Callum
2 years
We have a new baby 👶 arriving in 7 days. We still haven’t decided on a name. If you have any suggestions ping them over 🙏 Twitter baby 😆
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@CallumMckeefery
Callum
9 months
@ListerLawrence @LUDENClassics My neighbour just got his.
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@CallumMckeefery
Callum
1 year
Today is one of the most important days of my life🤞 Ever since Hudson’s FDXR diagnosis. I have searched the world for a cure or something that would help with his symptoms. ‘Omaveloxolone FDA Decision Day’ It’s a crazy coincidence that it’s also Rare Disease Day.
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@CallumMckeefery
Callum
1 year
For as long as I can remember my dream was to ring the bell at the Nasdaq. Now… it’s to get 8 hours sleep. Life hits you fast.
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@CallumMckeefery
Callum
2 years
We just completed our 2nd acquisition of 2022 🎉
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@CallumMckeefery
Callum
1 year
Last week Yotpo crossed the line with a mass email to Reviews•io clients The email defamed Reviews•io and made unsupported claims about the quality of the reviews they collect. Get your popcorn ready 🍿 Watch the full video and check the quality of your Yotpo reviews at 👉
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@CallumMckeefery
Callum
8 months
Trustpilot’s sales team on the way to the Christmas party.
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@CallumMckeefery
Callum
2 years
WTF 😳 Insane news 🤯 Our () logo is on the new Klaviyo website. Let me rephrase… a 10 billion dollar business just added our logo to there brand new rebranded website.
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@CallumMckeefery
Callum
1 year
A as parent of a disabled boy. Seeing this toy on the shelf made me so happy 😀
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@CallumMckeefery
Callum
2 years
Our IVF journey has been a long and painful one. We are the first couple to ever test for FDXR (mitochondrial decease) at embryo level. Along with some very clever doctors we managed to get the government to approve it as an IVF test. It added 2 years to our IVF journey.
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@CallumMckeefery
Callum
2 years
VC's will tell you to hike prices. But, hiking prices on your existing customer base without tying it to an improvement fucks off the one segment of the market you never want to upset, your early adopters.
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@CallumMckeefery
Callum
2 years
Iv found a Shopify App review network of 10+ apps. How it works… Each app owns several fake stores. The fake stores reviewing each app in the network. The apps all rank well but if you look closer you can see they have exact same reviewer base. I have sent report to Shopify
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@CallumMckeefery
Callum
3 years
@moizali I have to make this into a . Great tweet 👏
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@CallumMckeefery
Callum
2 years
Build in public… is not about posting fake revenue numbers. It’s about sharing your journey as a founder. It’s about sharing tax issues, pit falls, staffing problems and your wins. Posting that you made $400k in 30 days is not ‘building in public’. It’s bullshit.
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@CallumMckeefery
Callum
2 years
Me: another Chatgpt swipe file post
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@CallumMckeefery
Callum
2 years
Start up mentally. My son (Hudson) is unable to walk. So I made him a walker using duct tape and bungees. He loved it.
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@CallumMckeefery
Callum
2 years
Work from home kills most start-ups.
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@CallumMckeefery
Callum
2 years
Over 2 years ago I started negotiating the purchase of a derelict farm house. The property was owned by 14 people who had inherited it. It was a long drawn out purchase. Yesterday we got the 🔑 keys. So I wanted to start clearing the garden. What are you doing today?
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@CallumMckeefery
Callum
2 years
When you find a competitor sneaking around in your dashboard.
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@CallumMckeefery
Callum
2 years
Trying to make sense of salesforce.
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@CallumMckeefery
Callum
2 years
@abakermont Tweet of the day 🙌 savage Image created by
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@CallumMckeefery
Callum
2 years
✨ Update ✨ Create beautiful images based on Shopify App Store Reviews. Great review for @PrisyncCom 👏 @BurcTanir @ShopifyDevs @dcwca
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@CallumMckeefery
Callum
1 year
If you say 'yes' to everything. You end up with a product nobody wants.
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@CallumMckeefery
Callum
1 year
🚨 New Shopify Feature You can now display your ★★★★★ reviews within your Shopify Checkout. Another free update from Reviews•io
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@CallumMckeefery
Callum
6 months
We are looking for new UX/UI Designer to join our team.
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@CallumMckeefery
Callum
2 years
Love the lighting in our new podcast booth 🔥
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@CallumMckeefery
Callum
2 years
Love this move by @ShopifyDevs to show time installed. Makes it far easier to spot fakes.
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@CallumMckeefery
Callum
2 years
WHAT DO YOU THINK OF HOTJAR?
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@CallumMckeefery
Callum
2 years
How is Yotpo subscription ranked #1 in Shopify App Store with only 10 reviews? Seems like the shopify app store is no longer a level playing field 😳 @ShopifyDevs @moizali @ShopifySupport @DsMatie @RechargePayment
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@CallumMckeefery
Callum
1 year
If the UK government allows SVB UK to go bust it will deal a massive blow to the UK tech sector. We are talking 1,000's of businesses and billions of pounds worth of value disappearing overnight. It will be the domino that crashes the whole economy for years to come. The
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@CallumMckeefery
Callum
1 year
🇬🇧 office.
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@CallumMckeefery
Callum
2 years
UK politics is wild right now
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@CallumMckeefery
Callum
2 years
Just joined the wait list for Notion AI 🤯 Just a cool 800k in front of me.
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@CallumMckeefery
Callum
2 years
Founder spotting a competitor at an expo.
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@CallumMckeefery
Callum
7 months
To save money we transformed an old nightclub into HQ. The whole process took just under 4 months. (I will drop some before pics below) All our high-end furniture was sourced second hand. If you want advice on how we did it, feel free to DM me!
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@CallumMckeefery
Callum
2 years
I've just used ChatGPT to create a... Is the equivalent of people posting photos of their food in 2010.
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@CallumMckeefery
Callum
2 years
The 5 year evolution of the Twitter Bro’s bio. 2018 Property Investor <changed to> Bitcoin expert <changed to> Blockchain expert <changed to> Crypto expert <changed to> NFTs 🐒 <changed to> Seed Investor <changed to> AI <changed to> ChatGPT expert 2023 missed anything? 🤓
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@CallumMckeefery
Callum
1 year
We just crossed 500 reviews in the Shopify App Store 🎉🎉🎉🎉
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@CallumMckeefery
Callum
1 year
So proud of this lil guy It might take him a while. But, he never gives up 💪
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@CallumMckeefery
Callum
1 year
The Times 🙌
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@CallumMckeefery
Callum
2 years
I just got this update from Shopify 👇 We wanted to reach out to let you know that upon further investigation we have restored 's standing in the Shopify App Store. We appreciate your patience and cooperation along the way.
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@CallumMckeefery
Callum
2 years
We're always thinking of ways to improve conversion rates. We recently discovered that placing review excerpts next to the buy button significantly increased conversion rates 🚀 We call this solution ✨ Review Nuggets ✨
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@CallumMckeefery
Callum
2 years
Love a car with buttons 😍
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@CallumMckeefery
Callum
1 year
My morning routine
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@CallumMckeefery
Callum
1 year
Last week Yotpo crossed the line. Tomorrow we reply 🧨
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@CallumMckeefery
Callum
2 years
Over the past few months I have grown to love Twitter. These are the people I look upto… @kaleighf @moizali @DsMatie @JeremiahPrummer @darienpayton @tclarkmedia @dennishegstad @ecomchasedimond @chrismeadej @KateBour Who should I follow to diversity?
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@CallumMckeefery
Callum
2 years
What a VC backed Exit looks like.
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@CallumMckeefery
Callum
1 year
I keep finding photos of River on my wife’s Instagram in various outfits. 🤷🏻‍♂️ I’m with her 24hrs a day apart from when I go to the toilet. 😂
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@CallumMckeefery
Callum
2 years
992 sports classic is the best interior of any car on sale right now. Beautiful 😍
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@CallumMckeefery
Callum
1 year
Nothing worse than just getting into the zone when bam 🪫 💀 It reminds me even great companies can produce shit products.
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@CallumMckeefery
Callum
3 months
I don’t think Audi will make this. But, I hope they do it looks mean af. 😮
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@CallumMckeefery
Callum
2 years
My brave boy trying out his new walking device. So proud of this guy.
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@CallumMckeefery
Callum
9 months
I have a thing for old SLs. I purchased this car seven years ago at an auction. I was the only bidder, which worried me at the time. I thought I had missed something that other buyers had noticed. However, it’s never missed a beat. I love this car so much. It’s the only one
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@CallumMckeefery
Callum
2 years
WOW! Clients are loving our new notebooks 🔥🔥🔥
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