I can see this may take a while - or even be beyond you. So, let's take the example of a transfer of £1,500 which in your case starts off by costing you £1,504.
I am using Kasikorn so they receive £1,500 which they convert 44.003 (9th update today - source:- http://bankexchangerates.daytodaydata.net/default.aspx)
That is 66,004 Baht from which they deduct 326 Baht being their 0.25% min 200, 20 Baht to transfer it out of Bangkok and a 0.1% charge for goodness knows what....... net amount received 65,618 Baht.
With WISE, £1,504 less fees £9.24 = £1,494.76 remitted at 44.4075 = 66,378.55 Baht ...............or, 760 Baht than you received - Oh, and my money arrived in 6 seconds.
Try it on 1 million Baht ....... the difference is £96 in favour of the WISE transfer.
(the thread is about WISE fees versus banks).