Must say though in london never had a bike nicked. I use older looking (both over 20 years old tho many bits new) but very nice running bikes around town, d lock thro rear triangle, small light lock through front wheel. The brommie is never locked in the street - no need. I have been accused of being over nervous, once by someone who then got a bike nicked. The dale was never ever left in town even if locked and have since taken it apart to provide bits for one of the 20 year olds.