I visited Heritage Naturist Club in Crowthorne, Berkshire yesterday with some friends that I knew through YBN. The weather wasn't quite as good as it was forecast to be but we had some time to chill out in the hot tub and also a bbq with a portable camping set that we brought along. The club is very established with camp grounds, club house, outdoor heated swimming pool, tennis courts, volleyball court, petanque court, miniten court, hot tub and chalets that are occupied by the members.
I'd been there a couple of times previously with YBN and I would recommend it for anyone wanting to give naturism a try. I went as a member guest so I think you would have to call if you wanted to go as a solo visitor but if you are thinking of getting involved in naturism in the UK then I would suggest looking into YBN as they have events up and down the country and I made many friends and visited a lot of clubs through it.
More information about Heritage can be found on their
website and more information on YBN can be found
here