Which, the Lancaster notably excepted, wasn't saying a whole heck of a lot :) I think the Short Stirling was one of the ten ugliest airplanes ever designed.
It took the Brits a "few tries" to come up with a decent bomber. The Lanc could carry an incredible bomb load and was adapted to carry specialized bomb like the TallBoy that sank the Tirpitz and the Barnes Wallis skip bomb for the Dam Buster mission. it didi suffer from the same problem all Brit bombers had though, under gunned in defensive armament.