Two ponies for loan wanted for vet's children - ideal semi-retirement

I am a small animal vet looking for two ponies to loan for my 6 and 9 year old's first ponies from approximately February. They will be kept in the fields (with shelter/can be stabled) at the bottom of our garden and will only have light lead rein work (1-3 times per week). This will be mainly in the summer only. This would suit a much loved (perhaps older) pony who is moving towards retirement. Ideally looking for a pony that loves to be groomed, plaited and generally loved by children. Paramount that these ponies should not generally kick or bite. Would particularly be interested in well behaved shetland (?!!) or Welsh Mountain pony. If you think this might be a good home for your pony for the next few years please give me a call or text to discuss more details.