well i dont know if there is an option with uk layout but you can add a german one to your virtual keyboard. with a simple click you can change it and change it back. at numbers there is the "ß".

by the way hi to all
i got my n900 right from the start in december and i love it more each day. i hope to find answers to many questions as a linux beginner and also i hope to give help as well. i'm happy that i found this great forum. its members showed me so much friendlyness so far... so i'm looking forward learning much

this post is written on a n900 (virtual keyboard)