Due to the demise of the Paris flights, the not unexpected change to the opening hours is:
ATC Service
Monday – Friday 0800 – 1900 Local
Saturday & Sunday 0900 – 1900 Local
Extensions by arrangement [I have asked what the options are]
Circuit Training (Fixed-Wing & Rotary)
Monday 1000 – 1900 Local
Tuesday – Saturday 1000 – 1800 Local
Sunday Not permitted
Fuel Availability
Monday – Friday 0830 – 1845 Local
Saturday & Sunday 0930 – 1845 Local
I do wish they allowed earlier departures. They used to run an out of hours scheme, 7am local I think, but apparently a well known local operator abused it so they just stopped everybody operating it. I am told that an airport with a Public License is not able to take action against a particular operator.
I have to say, Oxford Airport is incredibly good in that regard. Open during the week: 06:30 – 22:30 and close to that on weekends. Very helpful with those hours for business trips.