What are the best currency exchange options for changing £10,000 in Pattaya?

In Pattaya, a few recommendations have been made for getting the best exchange rates for changing £10,000. The tips include visiting the TT main office for larger transactions, Lek on Soi 6 for good rates, and negotiating at various exchange booths. Additionally, someone mentioned that the Super Rich in Chiang Mai offers better rates early in the morning for large notes and shared a link to a place called Bank Gold, noted for providing the best exchange rates.