A Google search for Nick Brittan Formula Ford Lotus kicked up several sites claiming it to be a type 51R. The year is 1968. They wanted to show it at the London Motor show at Earls Court, but it was refused, so it was displayed at the 1968 BRSCC London Racing Car Show.
I quote from <<< link removed >>>: 'The current theory is that Graham Arnold may have used a spare Elan chassis number for convenience to register the car. You couldn't get away with that now, as the current system of Single Vehicle Approval involves a rigorous inspection, and it would fail on a lack of speedometer, though you don't need one to get an MoT.' and: 'There's no chassis number visible on the Lotus 51R though, and it's usually in the cockpit. The V5C registration document declares it as a Lotus 51R single-seater roadster, along with that six-digit chassis number and the registration NVF 1F the "Flower Power" car wore in 1968.'
also: 'Then I tell 'em how Arnold gets it registered as an invalid carriage on account of it's easier and cheaper. Like it's only got one seat. And how with that big 12 volt battery jolting around under your fly buttons you may not be an invalid when you get in it it but there's a fair chance of being that way when you get out'.
