Post office and post boxes
Post boxes and stamps
If you need to send a letter or postcard from Heathrow, you'll find post boxes and coin-operated stamp machines in each terminal, usually in both departures (after security) and arrivals.
You can also buy stamps at branches of WHSmith in the terminals.
Please be aware that you can't post parcels using the post boxes, and that anything you do post may be inspected by HM Customs.
Post office
The airport post office is on the first floor of the Terminal 3 departures building, in the public area before security (it's near the security control entrance).
