Originally Posted by Radiation Station

Might be a little tight but should be doable. I recently managed DUB-LHR-LAX with a one hour connection but we were commendably on time out of Dublin.

Do you have access to the First Wing? what class of cabin will you be travelling in?

You won’t have to cross the UK border when arriving on a domestic flight, so that saves time (arrivals from Dublin are treated the same).