We ended up at this totally by chance as we were guests at the registery office and then saw the signs while in the car park which was quite funny as the smattering of Phills at the event all sneaked off to go and stuff there faces at the festival

Was quite a bit smaller than the hounslow event but seemed far more friendly and community based with not quite so much propety selling as Hounslow was
The food was great and the ca parking seemed to be shared with the registry office which was free on Sundays but chargeable on the saturday and weekdays. Don't ban on a space as the registry office had several events on being summer and this meant quite a bit of queueing going on for a space.
The wife is thinking of going next year and not bothering with the Hounslow event (even though Hounslow far nearer and easier to get to) which is becoming a bit of a monster with all the hawking and promotional in your face selling plus the cost..