I really enjoyed it, destined to become one for all the family to gather round and watch together I reckon. Having Joey the horse as the lead character keeps things interesting, so if there's one actor/character/storyline you're not than keen on, another one comes along soon.
My one bugbear would be that the horrors of WW1 aren't really portrayed as they really were, but I guess in a 12A they went as far as they could.
The score is shamelessly manipulative, but again I loved it. I felt like I was holding back tears for most of the film and was a blubbering mess on at least 3 occassions.