No, Rootes-crap was noticeable underrepresented. At Brooklands, in the Beaulieu museum and the Beaulieu Auto Jumble, too.
Remarkable insofar, as all locations were nearly all around pure British in every meaning. Just Reliant appeared less all there than Rootes.

Of course there were some spare parts dealers with Rootes-stuff, but much less than with Austin/Rover -the whole BL-stuff-, Vauxhall (surprisingly much Opel-bits appeared on the market), Jaguar and UK Ford. Rolls Royce and Bentley were rare, too, but there was an existence visible.

The convertible was an early Reliant Regal, I think. It was a threewheeler.