I think both would be very good choices for you. Bet365 as you mentioned has the exclusive tables which are very soft and I would certainly recommend. Betvictor also offers anonymous tables which you should find nice and profitable, even the regular tables there are soft. Perhaps it would be a good idea to give them both a try and see which you prefer? Or if you like to multi lobby, these would be two great options.
As you are from the UK, I have to mention Sky Poker
. Possible that you already have an account there, but if not I would suggest you give the games there a try as they are some of the best available in the UK for cash. They do not allow HUDs there, but this again adds to the fact that the players there are more recreational and therefor the games are softer.
, along the same lines as Sky, no HUDs, aimed at recreational players, you can change your screen name there up to 3 times per day, this would be a great choice for you too. Both Sky and Unibet are also included in the rake race.
If you would like some help getting set up when you make your decision, please feel free to add me on Skype to chat direct keri.pokervip or PM me on here and I will be happy to assist you.