Lovely set of pics, Paula, although I may move this thread eventually to the Classic Car forum, since it focuses mainly on road cars.
However, in respect of the competition cars, I note Andy Shepherd's monstrous racing 428 Coupe (#16). It's more of a silhouette car really, since, under the skin it is quite removed from the road car version. Built at great expense for the Super GT series, it didn't see many outings because Andy was still developing it to iron out the bugs. Unfortunately, there were never enough cars for the series which is currently defunct.
The DB4, reg no. GFO 655, that you have photographed, is chassis 497, a car that sprinted at Goodwood occasionally in the late 90's.
You mention DB4, reg no 3 BYR. This is chassis 598, a well known and much campaigned car, in both sprints and races, including at least two outings in the Spa 6 hours in this millennium.