Hmmm. I have just just checked the CCC app, I put in Windsor as location, and the site is still listed there with its 2022 opening dates.
You’ll find out when you phone to book, I guess.
I have changed my mind, was looking at Devizes with a stop en route, but nowhere suitable/no reply to an email, so going to Shipton under Wychwood and Daventry instead.
Don't forget to leave a review of the campsites you have visited this year or last!