Evening. Been following this group for a couple of weeks, so many thanks for all the useful info I've been able to gleam. Popped into KBank on the 4th floor of the Central Festival arcade today in Pattaya . Asked to open an account, was asked for my passport, UK drivers license (2nd photo ID) and a copy of my Non-Im O-A visa. All setup with a 5000 ThB deposit, the cashier helped setup the App on my Thai mobile. All in all, in and out in 20 minutes. App confirmed my deposit after 30 minutes. Had to pay 400ThB for a Visa debit card. One thing I did pick up on is any FX transfers will take 3-5 working days, as Swift code is to the Head Office branch in Bangkok, who then transfer down to the branch, ie can't transfer direct to my account. Also, made a point of photographing any piece of paper I signed, did ask for a photocopy, but was informed "not possible".
So many thanks for all the tips, going prepared with all my paperwork paid off. Cheers.