early Douglas (made in Bristol )- its an early rod model 125 - for the UK market the headlight ( which was mounted on the mudguard elsewhere worldwide - known as Faro Basso) was relocated to be mounted on the legshields. Sir Stirling had several Vespa scooters, certainly one of which he was still riding in his 70s ...I wouldnt be at all surprised if his Family estate still had all his Vespa scooters? ) Reg number is (as was required at the time ) on the front mudguard NAD187