Jackson wasn't British, He was from the U.S. Virgin Islands.

At the time Benn, Eubank and Watson were engaged in some pretty brilliant battles over here fOR a World title over in Britain.

Stateside Toney, Jones Jr, McClellan, Jacson and McCallum were in the mix for a world title over there.

Each fighter didn't want to leave there comfort zone in such a competitive market and surrender an advantage by travelling to a rivals home country to fight.
Although fights between Eubank and Jones. Jones and Benn. McCallum and Eubank. were all pushed for the only international bouts that really occured were Benn Vs. McClellan and Watson vs. Mike McCallum.

Collins came on the scene later and he too boxed McCallum and was pushing for a fight with Jones before a brain scan ended his career.