Just before lockdown in 2020 (so I don’t know if they’re still operating) we had one at Dulwich College Sports Club. Super-easy to organise and it was great fun. I got all the info and did the booking through the sports centre website.
Balham Ballers do football zorbing parties and can get good rates for venues also. Definitely worth contacting Ize who runs things there. All the details are on their website.
