hi there.... u could contact the Kennel Club and they can send you a list of registered clubs in your area.
If u have found then a trainer of ur choice u should ask of his/hers qualifications and experience as there are plenty of self so called trainers out there not having much clue.

Im not sure if u also look into training the dog or only socialising but I would suggest to look for an outdoor training class with indoor facilities incase the weather is bad
Indoor is not bad too but only if the numbers arent too high.
I find to train the dog outside alot better and relaxed and thats where the dog has to listen and indoors there is just too much noise, barking, ppl talking, trainer explaining and so on.

The Kennel Club list is not vetted... better to try the ADPT where all trainers are assessed and use positive methods.
Local Dog Trainers - Association of Pet Dog Trainers UK

Once you find one you like the sound of ask if you can sit in on a class to see it in action. A good trainer will only be too happy to let you.

good luck

Totally agree with Dundee

Thank you for the answers

Whereabouts are you? I go to a really good one, I'm in Nottingham

Hi.

Im in Stoke on Trent.

Probably too far then! Hour there and back.

yes just a bit, but there is not many in this area. Dont understand why as many people seem to have dogs. Maybe they are just not bothered.