The Westfield (524 bhp per tonne) is very visceral and almost as quick round smaller tight tracks as the Ultima (690bhp per tonne), but on a fast track like Bedford it just doesn't have the legs of the Ultima. You must try it Neil as it could prove to be an interesting contrast to some of the cars you have owned.
On a separate topic Asbojohn, I'll leave Crunchie to give you the history of his racing overalls.

Regarding fuel consumption on the track day, best not to ask - it has two fuel tanks and a session almost uses one of the tanks. Luckily there is fuel available at the track, otherwise we'd have to tow our own bowser!