Ah that was me!
It was Avanti's old race car, I converted back to road use and used for track days etc. I did Goodwood and Retrocars at Brands this year. I'll post some pics if I can work out how!
It's currently sorn again as the race engine is getting a fresh rebuild and upgrade to mappable Punto Gt management.
Look out for a scruffy silver mk2 Turbo which is another road / track currently legal.
Are you local?