Piglets in York if you can be arsed to travel that far is a good for that age. Farm, playground, tractor rides and loads of activities. They also do a show a couple of times a day in their marquee. Theres a play barn with slides and other activities. The wood fired pizza in the cafe in there is not bad and reasonably priced considering. Had a pass last year and i took my daughter loads. She loves it.
We go there quite often as it's only 15 minutes from where I live. Went this Thursday just gone infact. My 6yr old held a royal python amongst other creatures this time.
National railway museum at York . Bit of a drive but free in and pound for pound one of the best museums in the country . Mostly indoors but there is an outdoors bit round the back with train rides and activity centre .
Our kids like Farmer Copley’s in Ponty. Loads cheaper than Cannon Hall. At the minute they have a maize and loads of stuff going on. You can also take em strawberry picking if you fancy it.
My grandson loves it there and the grand daughter she's 17 still likes going loves to fly the bird's of prey.