Forgot about them and same for Hove Park, I think. Not sure if Kingsway are being governed this year. Good to hear they used their nuts and didn't charge for over the hour.
I was a Preston Park attendant last year. Great summer job. The amount of attendants have diminished due to cut back. :-(
Preston Park tennis courts are free before 10 everyday and free when the attendant decides to abandon their post early.
Other than that, the are about £7.50 per court for adults.