Child friendly pub/restaurant Stokenchurch/M40 area?

[DebDids]

Please help! I live in Manchester but am looking to arrange a family get together over lunch in the Stokenchurch area (central-ish for all) within reasonable distance of the M40. Doesn't matter what sort of food but somewhere welcoming to children, and better still with a play area, would be ideal. The kids are aged 3-6 and the total party size will be somewhere between 10 and 25 people. Any ideas would be gratefully received!

There is a Harvester about 2 mins (if you catch the red lights) drive off of junction 4 (rather than 5) who are very child friendly - think there may be some grass to run around on outside too?

Great, thanks, will check it out.