Hi Albert,
You could try the National Archives etc?
Or maybe contact the CAA direct?
Don't know much about ATC logging & how long they have to be kept (Like Tax records)
I am a Fire service enthusiast and an Ex Fireman friend told me that the old call out records for his station went to the local city library after being passed on from Fire service HQ.
I pressume that the library you went to in MAN will only keep so many archived for so long?
As a long shot there is the British library at Boston Spa near wetherby just 5 mins off the A1.
They may store all the ATC logs from all the UK airports there?
I have seen the building it is 'Big'
I still need some registrations of the A/c I flew on in the 80's from MAN do you need PPR before going to the MAN library or just enquire?
Cheers.
BYAI.