Louis
Within the London FA, there is a very good support system, stemming from the top all the way down.
I'd recommend calling one of the RDO's (if you know or get along with one better than the other, call that one) and voice your concerns and/or worries. They will likely attempt to send someone to your game as support, if they're unable to attend themselves. Additionally (or alternatively), have a look at the next meeting at Pimlico that is appropriate for your level and age (might be the Young Referees meeting, L7-5 meeting or Mastermind) and there will be at least one senior person there who could help you.
Which part of London are you in, and I may be able to offer further names/contacts regionally