What about Alan L on this? He seems to be a bit unchallenged!
It can't be so hard anymore as you already have the make.
I missed this last month when I was away, but I don't remember anything looking like this from Robin Read's Dante Engineering Co. (in Luton, about 12 miles from me).
The sprint/hillclimb start looks familiar but I can't even place that at present.
There might be more to the Marcos guess than you think, as Jem Marsh (the "Mar" in Marcos) worked at Dante for a while before setting up Speedex