Great chance for a different kind of holiday (not widely advertised & a new venture for NT) for 2 adults & up to 3 children for 3 nights in the school holidays - premium NT accomodation & all meals are included.Only 3 hours "work" doing things like eco-pile building, path clearing or beach-cleaning per day in beautiful locations. It's not the cheapest holiday but a great deal as the accommodation is fab see http://www.stackpolecentre.org.uk
for Pembrokeshire with pool & jacuzzi or http://www.craflwyn.org/iaith/saesneg/accom1.htm
for Snowdonia & it's a true escape from the usual child-friendly options that parents can enjoy too. Also your money goes to a good cause & you don't even have to be members . For full details of holidays see https://www.nationaltrust.org.uk/main/w-vh/w-holidays/w-holidays-working_holidays.htm
or call 0844 800 3099 as family holidays can't be booked online.Hurry there are only a small number of places!