Berkshire carries real equestrian weight for its size — Windsor and the Ascot area have deep royal and racing connections, and Lambourn, just over the border, is one of the country's great racehorse training centres, which shapes the wider horse culture even for family pony buyers. Riding is taken seriously here, and the county has a strong Pony Club and showing scene to match.
Prices sit at south-east levels — expensive grazing and high livery costs are the norm, and a Berkshire pony is often bought as much for its schooling and presentation as for the animal underneath. If budget is a concern, it is worth widening your search into neighbouring Oxfordshire or Wiltshire, where land is more affordable but travel times stay reasonable given Berkshire's central southern position.