I am arriving at Heathrow Airport Terminal 3 (Air Canada) and departing from Terminal 1 on SAA to SA (layover is 11 hours). Are there any showers for connecting passengers anywhere (money is no problem), or do I have to leave the airport on a Hoppa Bus and get a day room at one of the local hotels? I don't really want to leave the airport environment! Cheers!
Shower at a hotel within Heathrow Airport.
Sofitel in Terminal 5 which is accessible from within the airport.
Terminal 3 departures
There are showers in Terminal 3 departures according to the Heathrow Airport website:
Showers are available in the No.1 Traveller Lounge in Terminal 3 departures (after security) – there is a charge for entry. Facilities may also be available to eligible passengers in the airlines' own lounges.
You need to pay to access the lounge, which can be done online. I don't know if you can do it on arrival.