I have received information from non other than Carole Nicholls, daughter of Nike founder Ken Nicholls, who confirms that "shamrock" was right all along, and I was very wrong, especially to trust something on the internet.
The car is indeed one of the Lotus 43 cars which were converted to F5000 specification by Nike to the order of Robs Lamplough. The car is photographed in front of Hopkins' Garage which was just down the road from the Meddon Street Works of Nike. Apparently Reg Gubbings came to collect one of the cars, and at that time ordered a new car which became the Mk5 Nike.
The French site from which I obtained my information is clearly in error. The odd thing is that I believed them so whole-heartedly.
Pftnbr keeps his point, as he was only providing the info I had requested. Shamrock gets a point, and my humble apologies.