It is a Compact A but sold under the Excel name only by Plumb Centre. They got it at a really low price and sell it as a special offer. Two year warranty no filling loop but PC sell it I'm told incl flue and prog at that price though whether it is our prog RF rs/timer I don't know. Bonkers price, far too low.
Have a few of these type installed now. They're OK, HW delivery is very good, with enough mains, especially on the 29. However I think the price is about right. Heatlines are cheaper and I would argue their components are dearer (apart from the pump), though they probably buy them well.
I don't look forward to cleaning the combustion chambers out, not sure if a brush will fit down all the gaps.
PS. Don't seem to be able to use a 240V external controls on the combi as you can on the system boiler.