Top rate and fast dispatch

Ordered Mexican Pesos on Wednesday, they arrived at noon on Thursday. Chose Sterling FX through MoneySavingExpert link. They had the best overall cost including exchange rate plus postage. Paid by direct bank transfer. Then got email from Sterling FX to say my bank had declined the transaction. I phoned the bank who said no issues their end. A couple of hours later I received an email from S FX saying all ok. So, minor blip but all ok in the end.