help needed from former park employee

[dan123]

Hello, I really need help. This is to keep an inoccent man out of prision. I can't say with case pending what it is about but will tell you later if you help.
Does anyone remember a wombles (as in of wimbledon commen) concert/show being help at the park?
We desperately need to know which year. It was maybe 1974 0r 1975.
Thank you for any help you can offer.