I understood that Go was very much Bob Ayling's (and Barbara's) concept, and when Ayling left the "establishment" at Heathrow moved against it at board level because they felt it was cannibalising their yield (and thus their bonuses) from Heathrow. That it was notably more successful than them grated as well. Although Go operated from Stansted it ran to destinations served by BA short haul.
After much self-centred bickering from board members it was eventually sold to its management, who in turn within a year had their financial backers for the buyout made an "irresistible offer" by Easyjet, and who took the fast buck route. Barbara was not happy.
Of all the LCCs that were around at the time, it seemed the best run operation. It could be said that its principal advantage was it was not saddled with the huge admin overhead and pension liability of BA mainline.