The whole thing is being run by the Stasi – there’s a Derbyshire County Council web page with full details, erm, here or you could pop into High Peak and pick up a leaflet from Jamie.
Parking in Glossop looks potentially hellish fwiw. Various streets closed or converted to one-way for the day with ‘unauthorised vehicles will be towed’ signs all over the place. That includes residents who are advised to park in side streets which are, as you probably know, mostly already full of the cars of people who live in them.
Good luck – we’re walking and/or biking, but not sure exactly where atm.