I can think of one name he could work well with on the show right off the bat. Travis Banks. I'm a huge unashamed mark of Travis Banks so take it with a grain, but he would match Dunne's stiffness with his own almost magically.
As someone had already alluded to, by all rumours Jim Smallman, one of the creators of PROGRESS is heavily involved in the NXT UK creative. This is important as PROGRESS was in fact crippled and is still recovering from a near two year long storyline involving Banks chasing Dunne for the top title.
It was positioned a little differently, Dunne in PROGRESS was this great wrestler but he chose to be a bitch heel and cheat to win his matches instead. Banks was over with the crowd as a superman and for whatever reason they decided he was to be the next Champion and they decided to facilitate this Banks would be on this chase for the title but simultaneously on this losing streak too. It seems bizarre to change his character for the chase given he got over as a different character which got him into this position in the first place but it worked. I thought Banks was boring as all fuck but the crowd adored him. He was as over as a wrestler could be.
This all culminated in the biggest show of the year, Banks finally beat Dunne for the title in one of the most atrociously overbooked matches in wrestling history. I guess fans should have seen the warning signs given the long built pay off was so unsatisfying but the worst was yet to come.
For whatever reason they decided that Banks now had the title they were going to go back to his original character again for some reason. Now he wasn't the chasing underdog, he was the invincible champion instead. Every person that faced him for the title would be destroyed in glorified squash matches Banks would barely sell for as he went through the motions. His matches were the absolute drizzling shits.
He was basically PROGRESS' Okada. Now I fucking hated Okada's NJPW Heavyweight Title run and while people forgave Okada's Super Cena bollocks booking, the crowds were not so kind for Banks. He was creatively bankrupting the company, he wasn't the person the crowds were rooting for in the chase and his matches were fucking boring. It didn't help that at the time guys like WALTER were getting super over on the British indie scene and there was a huge wealth of regular British talent and PROGRESS regulars who were basically not doing anything because Banks had created a blackhole in the middle of PROGRESS and so the turn on him by the fans was brutal.
They did a small run where Banks was this heel Super Cenaesque parody of himself but while that made things more bearable it didn't salvage the crowds hatred for him at this point so the run came to an abrupt, unceremonious, end and is the worst Championship reign in PROGRESS history (excluding reigns which ended due to injuries or intended storyline shenanigans).
Months later and PROGRESS are still scrambling around trying to recover from one of the most disastrous extended periods of storytelling in the companies short history.
In short, there is no way in fuck Smallman will ever put a title anywhere near Banks ever again unless WWE put a gun to his head.