You have to download PrealSoft HD Cities London Photoreal Scenery or another London Photoreal Scenery before use this product.

London is the capital and most populous city of England and the United Kingdom.
Standing on the River Thames in the south east of the island of Great Britain, London has been a major settlement
for two millennia. It was founded by the Romans, who named it Londinium.
London's ancient core, the City of London, largely retains its 1.12-square-mile (2.9 km2) medieval boundaries.
Since at least the 19th century, "London" has also referred to the metropolis around this core, historically split between Middlesex, Essex, Surrey, Kent,
and Hertfordshire, which today largely makes up Greater London, a region governed by the Mayor of London and the London Assembly.
London is a leading global city in the arts, commerce, education, entertainment, fashion, finance, healthcare, media, professional services,
research and development, tourism, and transportation

The main features:
Autogen (Houses and trees) for London Photoreal Sceneries
Specific building Textures (UK Style)
3D Objects and landmarks, bridges placed at their real location.
Optimized for best framerates