I'm not sure of that, I've never been able to stand Abbott, except the time our beer festival had a whole load of it left over at the end and it was free. Free Abbott seems to have a distinctly different and more pleasant flavour, I think there've even been times when I've found free lager palatable though, mind...
Morlands used to have a low strength bitter they called Independent Pale Ale (badged IPA on pump clips), and I think Wadworths ordinary bitter is Henry's IPA? GK IPA is hardly unique in this respect.