US LLC needs UK GBP Bank Account solution

Hello all

I represent a US LLC who are setting up for business in the UK without a UK legal entity to start. They will be fully VAT registered as a Non Established business. They need a UK bank account so major retailers can pay in GBP and then the money would sweep back to the US. Although completely legal many UK Banks now shy away from this kind of non resident business banking. I was interetested to know if anyone has recent experience in this area. I Transferwise an option here?