How bad are your scars really? What do they look like and how big are they. maybe you are more aware of them than anyone else is?
You could try Bio Oil as suggested, although it's not an immediate remedy and will take time to see any improvement, or you could try Cica Gel, which is like a silicon patch, which is stuck onto the scars and worn for at least 8 hours per day. The patch will help to rehydrate scarring, flatten and improve, but again, takes time.
You can discuss this with your GP, however, you may not get the result you hope for. It really depends how sympathetic your particular GP is.
As regards to treatment, you could have scar revision surgery. I had an indented scar on my lower leg, a couple of inches below my knee. This resulted from having a surgical pin inserted for traction, when I broke my leg as a child. I'd been conscious about it for years as it was ugly and looked like a hole. Anyway, I had scar revison surgery and was very impressed with the results, since having the surgery 3 years ago, I've also been massaging in Bio Oil to the new hairline scar and it's hardly noticeable now.
I don't know if you will be able to have surgery on the NHS, you would probably have to do a good job convincing your GP, that the scars are causing psychological distress. Privately, you would expect to pay anything from �1000 upward.