My Brother had his brand new Cannondale stolen from the local (Soho) multistory car park, right under the noses of the security staff.

Rule one - Never ever trust the NCP.

My brand new (1.5 days old) Specialized Rockhopper A1 FS Comp fully fitted for touring bike with a D Lock and cable was stolen 5m (15 feet) from the the Security office

Later discovered it was the 4th bike that summer.

Rule Two - Just because it's in full view of the Security staff don't assume the will protect it. They get paid such crap wages that if you want a new bike, try bunging the Security a few quid/bucks and see what happens.