I checked the online UKAIP (YES, it was working!), and that shows Sywell as open
Summer (is this summer?)
- Mon - Fri 0800-1800 or SS
- Sat/Sun 0800-1700 or SS
- and by arrangement
Winter
0900-1700 or SS and by arrangement.
So it sounds as if it was closed while promulgated as open.
I bet nobody does anything about it.
See folks there on 5th Oct?