Then the second car needed insuring, a 20yr old Saxo. More silly quotes, so went back to Saga, but couldn't use the 10yrs ncb as it had been used on the Nissan. So the lady at Saga asked whether I had accrued ncb - yes says I, but can't use it twice. She then went away for a minute, and came back with the statement that she could "mirror" the 10yrs ncb from the Nissan. Result - £230 down to £125!
Don't know if they cover bikes, never asked.