We are residing in Kuwait. Received e-mail to send passport to London office for Visa stamping. Checked with different courier companies regarding sending the passport. They are ready to deliver the passport to the London office for stamping, but they are not ready to give us a pre-paid envelope to get the passport back from London. Can someone please advise, if the London office will arrange by themself to send the passport back in the self addressed envelope we send to them or will we have any problems. Message in the E-mail we received By courier or mail: Send your passport(s), photos and the completed CHECKLIST. You must enclose a self addressed envelope, at least 23cm by 33cm, addressed to you, large enough and strong enough to transport your passport(s) and visa(s) to the address where you wish to receive your visa(s). We will endeavour to return your passport(s), within 30 working days of their receipt.