CitiKey London 0.91a

the author of this app says:

CitiKey is a mobile city guide currently being launched across Europe. The guide gives users instant access, through their PalmOS device or WAP phone (currently London and Stockholm), or Windows CE device (currently Stockholm only), to everything they need to know to make the most of whichever city they are in. Information includes restaurant listings and reviews, entertainment listings, accommodation and much more, all integrated with searchable maps. Each listing can be shown on the map, and searches for the nearest object cn be added.

The service is free, updated every Friday.