Matched betting is pretty much dead now. The 2005 gambling act is about to be replaced, it's not and never has been fit for purpose it was designed for telephone betting and once online gambling took off it was lumped in.
As more companies are withdrawing from the UK, offshore companies will be picking up the slack. There are many companies that are licensed under other jurisdictions that provide gambling services to UK citizens and these sites are beyond the reach of new regulations and UKGC rules. Have you been getting ' not on Gamstop ' texts? I've been deleting them defo wouldn't recommend clicking any links, if they are legit they're unregulated.
The two major factors the Gov will be looking at are taxation ( the reason most bookies have left already ) and gambling addiction and how the bookies deal with it, lots of them have already stopped or significantly reduced free bets and spins in a feeble attempt to show they take it seriously. I had 5 VIP accounts with various bookies ( Bet365 used to give me £500 free bets for their inplay football and ITV racing 4/1 offer & 10Bet gave free bets up to £1000) all of this has stopped now.