I know about Abdul mohammed and I believe he signed a contract with the UFC already to fight on shows. But if he's on TUF while he would be a talented fighter I don't see how many more English guys they would be able to get who could actually win the show. Most of the talented English fighters are already signed places or are filling UFC undercards like Paul Kelly who IMO would be the perfect guy for TUF.
I think that before TUF starts pitting counties against each other, they should have more fighter diversity with the normal format. It would require more talent scouting and increased logistical support with the language barrier but the end product would be worth it.IMHO