Fen Farm is a long-established family-run campsite on Mersea Island, Essex, situated near the sea and close to a country park in the small village of East Mersea.

The Lord family has owned the farm since 1918, and the first tents were pitched in 1923, meaning the site has grown organically over the decades rather than been purpose-built.

It accommodates tents, tourers, and motorhomes of any size, alongside 90 static owner-occupied caravans. The site offers level grass pitches, children's play areas, a conservation area, and an information centre.

Dogs are welcome at no extra charge, with dog walks around the park and a dog-friendly beach nearby. Off-ground gas and charcoal barbecues are permitted, and the site operates seasonally from late March through October.