Originally Posted by
canadavid
You would have plenty of time to drop off your luggage at this time as it close 40mn before.
However, it is quite long to go to the gate (security and passport control to clear). But again, you may have time with 70mn to go...
there is no immigration to clear to exit UK. And EDI airport is not huge. But that doesn’t change your answer on the main point : OP will have plenty of time.