AccuCities - http://www.AccuCities.com
3D model of London - Tile TQ3280 in Level 3. This particular 1000 x 1000 meters 3D Model includes The Shard in Level 4, London Bridge, Millenium Bridge, Southwark Cathedral and Shakespeare's Globe Theatre.
This is a commercial product available for your renders, games, VR or 3D printing projects. You can download 1/4 of the model used in this video as a sample in all Levels of Detail. Chose DWG, SKP, FBX formats. The sample is also available as a simple Interactive App and an UE4 Project
http://www.accucities.com/download-sample/