It was recently featured on BBC Rip Off Britan and by Autoexpress. To give you a brief description of the story: 1 in 10 insurance write-offs is not recorded on HPI, Experian etc. due to faults and flaws with the current system.
The issue is not only related to cars and motorcycles are part of the same problem.
I will try to find motorcycle example, I thought I had one but edited it out as AutoTrader marked it wrongly as HPI Clear.