Ordnance Survey
@OrdnanceSurvey
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Britain's mapping agency. Helping you #SeeABetterPlace with world-leading location expertise. Get outside with @OSLeisure . Online 9-5 Mon-Fri.
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Pinned Tweet
Introducing new updates to the OS National Geographic Database 🎉
This new release is a game changer for the public sector and organisations who access millions of features to help shape the world around us.
Now available on the OS Data Hub:
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Our calculations have discovered the three 'norths' will combine for the first time in history this week🧭
True north, magnetic north and grid north will combine at a single point - starting at Langton Matravers, a village just west of Swanage
#3Norths
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It took 28 years to complete this geological map of Scotland's mainland! The perfect combination of geology and cartography was created by Harry Young, and framed by his family for his 85th birthday 🗺
📷Shared with permission from
@Jefferies_
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Did you know that there are 82 British islands larger than 5km2? Our GeoDataViz team and
@undertheraedar
from
@sheffielduni
explored the islands in
#geodata
#GBIslands
#opendata
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We’re testing real life contours! Contours are a feature of many of our mapping products; and now we’re taking them to the next level with our eco-friendly contour paint. 1/2
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New poster to celebrate 70 years of Great Britain’s National Parks
#discovernationalparks
#gbnationalparks
@uknationalparks
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Are you interested in Great Britain's landmarks? This heatmap shows the distribution of historic buildings in GB; including Castles, Estates, Cathedrals, and more.
It was created using OS Points of Interest and OS Open Zoomstack through ESRI
@ArcGISPro
's Kernel Density tool.
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We first introduced colour printing back in 1887 to the one-inch to the mile
#maps
! Today's closest equivalent is the 1:50 000 scale🗺️
#ThursdayThoughts
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#30DayMapChallenge
Day 6 - Network 🛤️ | OS Cartographer Tom Peterken shows road, tram and water networks in
#Nottingham
- highlighted on large and small scales.
The animation uses OS data and was created in Python, utilising matplotlib and geopandas.
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Ever wondered about the structure of our
#trig
pillars? Let this diagram sate your curiosity👇
#ThursdayThoughts
#tbt
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May the fourth be with you! 🌌 Our DataViz team has created a map featuring Star Wars filming locations across Great Britain. 🎥
#StarWarsDay
#MayThe4thBeWithYou
#DataViz
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Wow - look who has an OS moon map 😍🙌
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All of the
#100walks
in Britain’s Favourite Walks on ITV tonight are available in OS Maps. Head to to find your favourite and
#GetOutside
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#FreebieFriday
! RT & follow by midnight Sunday to enter our
#competition
- 1 OS map Rubik's Cube up for grabs
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#tbt
to when we held a map amnesty and people sent in their old maps in exchange for vouchers. Before reusing or recycling them, we couldn't stop ourselves making a map of Britain out of old maps👇
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Rain or shine? This map of mean annual precipitation relative to land area, aggregated to GB postcode district was created in
@qgis
&FME, using data from OS,
@metoffice
, and
@ONS
.
By OS Technical Relationship Consultant James Armstrong for
#30DayMapChallenge
, Day 18 - Atmosphere.
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We love a quirky
#map
- how about Britain's Roman roads reimagined in an underground map style?
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#FreebieFriday
! RT & follow by midnight Sunday to enter our
#competition
- chance to win a set of our OS Tour Maps
93
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#MappyBirthday
to us - 229 today! Take a look at the evolution of our brand logos over the years👇
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#FreebieFriday
#competition
time - just RT & follow for the chance to
#win
a lovely OS running top - good luck!
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Enjoyed
@itv100walks
? See all of the routes and descriptions at now to plan your next
#GetOutside
adventure
#100walks
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The trig pillar was first used in the retriangulation of GB in 1936 and over 6,500 were built across the country. We thought we'd kick off our
#30DayMapChallenge
by, well, mapping them!👇
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For the first time in Great Britain since the 1660s, magnetic north has moved from being to the west of grid north to the east. See the areas currently affected:
#map
#navigation
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#FreebieFriday
! RT & follow by midnight Sunday to enter our
#competition
- chance to win a copy of the
#GBColouringMap
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RT & follow by midnight Sunday to enter our
#FreebieFriday
#competition
-
#win
a copy of the
#GBColouringMap
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#FreebieFriday
time! If you want to
#GetOutside
more in 2018, then RT and follow for the chance to win an OS Maps subscription in a box. Enter by midnight on Sunday 7 January.
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This triple alignment is an interesting quirk of our national mapping,and the natural geophysical processes that drive the magnetic field.
Find out more about this once-in-a-lifetime occurrence:
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From our
#survey
in 1867, these are some of the oldest photographs ever taken of the
@EnglishHeritage
#Stonehenge
landmark👇
#Stonehenge100
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#30DayMapChallenge
is back! For Day 1 - Points, OS Cartographer Hannah has been Mapping the Malts 🥃
With over 130 distilleries, Scotland produces more whisky than anywhere else in the world. The 5 main whisky regions are
#Highland
,
#Lowland
,
#Speyside
,
#Islay
and
#Campbeltown
.
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#FreebieFriday
! RT & follow by midnight Sunday to enter our
#competition
- chance to win a copy of the
#GBColouringMap
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May the fourth be with you! 🌌 Have you visited any of these locations?
#StarWarsDay
#MayThe4th
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Happy birthday to the Forth Bridge - opened on this day in 1890. Our Flying Unit captured her alongside the Forth Road Bridge and Queensferry Crossing in 2017
#surveying
#forthbridge
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Our
#GeoDataViz
team's favourite geo data visulisations of 2019 included
@Timmeko
’s map of America’s weather and
@jonni_walker
’s powerful depiction of threats to sea turtles. What are your
#favemaps
of 2019?
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2021 marks 85 years since the trig pillar was first used to map Great Britain. To celebrate, we've compiled some trig trivia👉
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We’re 230 years old today🥳
Now seen as the foundation of OS, on 21 June 1791 the Board of Ordnance purchased a Ramsden theodolite to survey and protect Britain. Discover the history of the humble theodolite:
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The beauty of blue showcased in this data visualisation of Britain's walking routes
#bluemonday
#datavis
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If you like
#maps
and fiendish brainteasers, we're pretty sure you're going to love our brand new OS Puzzle Book👇
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We neither confirm or deny the rumours we are talking to
@FA
about showing future England teams data, maps and routes to the opposition goal
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This decade, for the first time in Great Britain since the 1660s, magnetic north moved from being to the west of grid north to the east - see which areas are currently affected
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OS will be on
@itvmeridian
at 6pm and
@BBCSouthNews
6.30pm tonight, following a visit from The Princess Royal to the emergency services showcase at OS HQ today, where services including
@HMCoastguard
,
@MountainResqUK
showed how they use OS data and tools to create a safer nation.
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What happens when all our
#surveyors
get together in one place? They create a map of GB by standing in the different areas they survey of course!🗺
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New to map reading & feeling confused by contours? Try our beginner's guide to contour lines
#NationalMapReadingWeek
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We're 229 years old today!🎉
4 years ago we released 2 new
#maps
styled in homage to our past. Discover them on our blog:
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We first introduced colour printing back in 1887 to the one-inch to the mile
#maps
! Today's closest equivalent is the 1:50 000 scale
#TuesdayThoughts
4
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121
#FreebieFriday
-
#win
1 medium men's running top. RT & follow by midnight Sunday to enter!
#competition
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Covering a combined area of 23,138 km2 (that’s around 10% of Great Britain and an area slightly larger than Wales) the National Parks of Great Britain have been turned into data visualisations
#discovernationalparks
#gbnationalparks
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We're celebrating 70 years of Great Britain's National Parks by releasing this poster for sale!
#discovernationalparks
#gbnationalparks
@uknationalparks
#traveltuesday
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Have you seen our
#map
symbol flashcards? Print them out & test your kids' skills - or print two packs for a game of
#geography
snap!
(PDF)
#homeschooling
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Thanks to
@tjukanov
for starting the
#30DayMapChallenge
, we've loved taking part and seeing everyone's amazing creations!
The final theme is a no rules map, so we thought we'd share the evolution of OS mapping👇
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New high-altitude platform to revolutionise the way we look at Earth - the Astigan A3 platform
#astigan
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This data visualisation shows the largest river networks, as measured by the total length of all the rivers and streams that connect to each other.
Using OS data, we're able to determine how rivers, estuaries and streams are connected to each other. 🌊
#UKRivers
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Have you heard of
@DanRavenEllison
's Slow Ways project? A team of 700 volunteers across the UK have used OS Maps to create a network of 7,000
#SlowWays
walking routes. Find out more:
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What if there was a network of off-road walking routes connecting all of Britain’s towns and cities? Discover
@DanRavenEllison
's
@SlowWaysUK
project:
#SlowWays
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We welcomed
@MrEdByrne
to the OS head office last week to meet the team and show how we produce maps, in support of his latest YouTube series Ed Venturing!
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Mappy Valentine's Day - tell us your favourite romantic place names around Britain 👉
#valentinesday
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You've added an amazing 400,000 public routes to OS Maps in 12 months - take a look at the popular areas
#dataviz
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We are 227 today! From our first map of Kent in 1801 to a geospatial database of Great Britain with over 460 million features…there have been many changes. Take a look:
#OS227
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6,500 trig pillars were built for the retriangulation of GB and around 5,500 are still standing. As part of our trig trivia, we asked
@cartocraftsman
to map them👇
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If you want to lay out all the 1:25 000 scale maps in the shape of GB, you would need a room that is approx 50m x 25m!🗺️
#TuesdayThoughts
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OS Open Greenspace launches today, becoming the latest free product available as OS
#OpenData
#OSgreenspacemap
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