The Building Heights in London map is a great advertisement for vector maps. If you are looking for creating vector image from jpeg file, you can use Free vector map Britain + Ireland, Adobe Illustrator, download now maps vector clipart. Up until a few days ago this map was incredibly taxing on the browser and almost impossible to navigate. Now all the building height data has been added to the base map as vector tiles and it works like a dream.
The map uses data from the Environment Agency's open LIDAR data. As you might expect the map shows that the tallest buildings in London are in the centre and tend to get shorter as your move out from the centre. The City of London and Canary Wharf are where you find the tallest buildings in London. If you zoom in on Stratford in east London you can also clearly see the growth of taller apartment buildings which are springing up around the Olympic Park. Source