The Boiler is a Gloworm Fuelsaver. Made not far from me in Belper, Derbyshire. Gloworm is now part of Vailiant. Its a conventional boiler, nothing fancy - no modulation or anything sexy like that.
I thought it might be a Gloworm, because the gold bottom panel looked like our original boiler, but I didn't want to get chewed up by certain members for suggesting a Gloworm - Very reliable, nowt much to go wrong and very cheap to repair.