This might interest new member members of the RSPB and how visiting Leighton Noss before the 1980’s was only by permit and only open 4 days a week and not open during the winter period, unlike now with RSPB reserves open 7 days a week all year round and opening from dusk to Dawn now unlike 1970’s and earlier. 2014 was Leighton Moss reserve 50th This was similar as Minsmere and some other RSPB reserves as well.
Regards,
Ian.
Below is an enlarged photo of the details for visiting Leighton Moss. as the details where not shown up about visiting Leighton Moss by permit. So you should be able see much clearer each word..