Sussex Tennis is the only player networking site that I have put my name to. I have been using it in pre release for the past couple of weeks and I'm sure it will benefit everyone that I coach and even those that I don't!
Register as a player and you can find players around Brighton & Hove that are similar standard who you can train with or play matches against. If you're feeling competitive then coming soon you can also enter tournaments to win prizes, medals for your profile, but also bragging rights! 😉