I live in Surrey. DD has ASD, high functioning. I have 3 close friends who also have kids with ASD, all very different from DD and with different needs. All of us have had pretty much what we've asked for, some took longer to get than others, no tribunals. We got a statement for DD before she was 3. We have 1:1 full time at her mainstream pre-school, we've had a great speech and language class (only 4 other kids with DD) with a speech therapist and an assistant where our DD's language really flourished. We've had OT with sensory integration although that was only for 8 sessions. We've paid for some stuff privately and currently pay for an amazing therapist/child psychotherapist to go into DD's pre-school once a week. Both the pre-school and the infant school she is going to in September are happy to liaise with our therapist and include her in DD's education. We've had two educational psychologists, both have been fabulous.
My 3 friends took longer to get statements. Two of them got places at special pre-schools for ASD's. All 3 have their first choice for schools for their kids - including a specialist speech and language unit and a specialist ASD school.
It has been a struggle sometimes but I have learned that generally everyone involved has wanted to help and do their best within the confines of their job roles, budgets etc. Yes, in an ideal world everyone would have access to ABA and private funding like in other countries where parents have the authority to choose their early intervention (like in Alberta, Canada where i'm from) and i'm sure if any of us had wanted ABA we would have had to fight for it. Sadly like everything else in this world it all comes down to the money.
I would never leave Surrey unless I was going back home to Canada, every bit of my DD's provision has been useful and helpful and she's doing really well. It hasn't always been rosy and when I first started down the road I used to get angry a lot at how long things took or all the stupid steps you have to take but it is what it is. I don't think you'll do badly moving down to Surrey - plus its nice down here :)