Up until now I have always insured our bikes via our House Insurance. Total value of 3 bikes was about £5000. This year, the costs using our house insurance was in excess of £120.00. Did some hunting around came up with TSB Pick and Protect. https://www.tsb.co.uk/home-insurance/ You don't need to take out their house insurance you can just pick what you like. Key thing is you only insure to the value of the most expensive bike and all other bikes are covered! There is also no need for a gold secure lock to be fitted. (you do need to lock the bike to an immovable object though, which a bike rack on a motorhome is deemed to be) The maximum value of bike they will insure is £3,500 which just happens to be the cost of our current tandem for the princely sum of circa £32.00!