It is a safe bet that you don't have world class talent and will not get world class coaching. The number of people who become world class in any pursuit is miniscule.
This should not stop you from taking up wrestling if you are interested. Give it a try and if you enjoy, it work hard at it and you will become better, with a decent club and a lot of hard work you can become a decent wrestler.
Trying to decide whether or not to start wrestling only if you are going to have success on a world level is like someone thinking about taking their first guitar lesson, but hesitating becuase they want to know if they wil become a world famous rock star.
The position you are in is next to impossible as far as world class is concerned.
However, how about you take up wrestling, train hard, get in good shape and love it. I got a late start on it as well, but now I'm the head coach of a fairly successful high school team. This sport has given me a lot, and what it has given me even in my late start has been way more than I could have imagined. If you get as much out of it as I do, then you can consider your endeavors successful.
This would be my attitude if I were you. Not trying to discourage you, but merely provide some perspective.
To avoid criticism say nothing, do nothing, be nothing.
You are quite lucky, there is quite a few wrestling clubs around the Manchester area.
Also the British wrestling team is based in manchester.
If you are looking for wrestling clubs the British wrestling association has a list of wrestling clubs in the UK. Just google bwa...
I would advise you try the 'Y-club' which is a wrestling club that is connected to the castlefield hotel, its next to the museum of science and industry. Some good wrestlers there and a good coach.