what is the best way to receive money from london by cheque or by consignment?

Answer 1

???? by electronic funds transfer (EFT) = SWIFT, BACS etc

Any real Business (or private individual) can transfer money electronically direct to your Bank Account .. any that claim they can not are likely to be con-merchants, scam artists or criminals / terrorists (EFTs leave records that allow the funds to be traced from destination back to the source by the authorities)