gilesdavies
Well I don't know if you don't consider Kayak, Skyscanner, Expedia, Opodo and Booking.com "major travel websites" but they all show SEN when 'London, all airports' is selected as the departure point. I didn't bother checking more than those five. The official London tourist website visitlondon.com lists SEN. IATA recognises SEN as a London airport.
Yes, a very good idea not to say any more I think.
Last edited by Expressflight; 26th Sep 2017 at 08:01.
Reason: additional thoughts