I always thought Blur was sort of the quintessential Britpop band. They were certainly the biggest ones, on both sides of the Atlantic. "Popscene" is their defining moment, before they went indie low-fi. How do you like that lingo?
Catherine Wheel really weren't Britpop. I would, however, consider stuff like Pulp, Menswe@r, Blur, etc. to be Britpop. Not that classifying matters. I would lump Lush, Ride, Catherine Wheel, etc. as more shoe-gazing type bands, before they rebelled and tried to go off in other directions as a result of grunge. I feel sorry for a lot of those bands back then. Grunge probably made a lot of them re-think their directions as they tried to break through in the U.S. Catherine Wheel wanted it SO bad in 1995 when they released "Happy Days". Instead they got beat out by Bush. Really sad, CW was such a great band. I still love them.