Applying for pension and which courier to use advice

[Terpe]

update, while waiting for this letter, i neglected checking my bank balance, well today i walked past the BDO ATM and thought i will just check , so i did and i read the balance and printed a statement, and thought the bank had done me i read there was less than the balance i had deposited required to open the account, well i get home and go to online banking to see where my money had gone, then i realised i missed out a digit so where i thought i had less money i had heaps more, there were 2 payments from DWP one last week a large amount then another paid in yesterday of a smaller amount, so one very Happy chappie here

So you mean that the DWP paid your pension directly into BDO bank and all worked out perfectly????
Great....I am now putting on my think cap.
So what information does DWP need to make that transaction ??