I did it years ago and loved it. Even got my one star
It's something I do on holiday but haven't done it here since.
Just looking for any hints or tips really.
Would like to be a bit more active and spend some time outside. Not very fit and quite overweight but looking to change that. I can swim but would of course wear a life jacket
Interested in the open top kayaks probably. Not convinced I could get back in while in the water if I fell in though! 
Also recommendations of places to hire equipment would be great
Can travel from west London, happy to drive up to an hour
Thank you!