I am paranoid about leaving my cycle in London, and gernally try and avoid it. Insure it, enjoy it and if it gets nicked thats life. I believe a cycle should be enjoyed and not camoflaged (especially the beautiful paintwork on a condor. Oh, and get a good lock. I have a handcuff type lock which is very good as its tight around the frame and a lampost. They are small and take little space in your bag.