In Karen, virtually across the road from Karen horse riding school, tucked away is the real gem of a place. Amazing lawns, they usually open up a bouncy castle for the kids, in addition to the many permanent playground attractions.
Food and service are OK, nothing exceptional (unlike you're really into English pub sort of food), though they do have some interesting items. The marshmallow and chocolate samosas - how could you not try such a desert?! - are highly recommended.
Great place for a weekend breakfast/lunch