Apart from the obvious YB engined cars, they had a hand in the following, bit of duplication of other posts but you should get the idea.

Lotus 7
Caterham Super Seven, with cosworth BDR
Chevrolet Cosworth Vega
Escort RS1600,RS1800,RS1700T
RS200
Scorpio 24v

Opel Ascona 400
Opel Manta 400
Opel/Vauxhall 2.0i16v as used in the Kadett/Astra, Vectra, Omega
Vauxhall Chevette HS and HSR

Mercedes-Benz 190E 2.3-16, 2.5-16, 2.5-16 Evolution

Panther Solo

Aston Martin DB7, Vanquish