I had mine 13 years ago. I was a 28H-HH and went down to an F. Best thing I ever did, however they have grown back over time and not by putting on weight, as I’m not too different weight wise.
I went private but it was in Australia, so slightly different to NHS. It was a 6 year wait to have it done on Medicare (similar to NHS) but only 6 months private so I could choose my surgeon.
My scarring faded really well, you wouldn’t know from looking at me now, or even about 2 years after, but everyone is different when it comes to scarring. I normally scar well, so that was a good indicator.
I had minimal pain, just didn’t do anything strenuous for a while. I remember the worst pain after was driving over a speed bump!
The one thing I notice now is scar tissue has built up internally, which is quite lumpy and sometimes painful. It means I do get checked more regularly for anything that might be abnormal, but so far so good.
Apart from these things, even the fact they have grown back - best thing I ever did for myself. I was a changed person after. Plus now they definitely look better than they did, even now. I would consider doing it again at some point, but might wait a little longer.
Good luck on your recovery!