Originally Posted by
pacer142
Easyjet are fairly strict - passport, EU photocard driving licence (counterpart not required) or EU/EEA (including Swiss I believe) national ID card.
I've just been to their web site and the only requirement for domestic flights in the UK is
Domestic Flights UK - Valid passport or photographic I.D.
Interestingly they seem to insist on a passport for all flights outside the EU, including flights to Norway and Switzerland, places that have accepted EU identity cards for decades (I don't know when Norway started accepting them, Switzerland was accepting them as long ago as the 1960s)