A campaign to get more Bristol children and their families spending time outdoors is being launched by the National Trust.

Tomorrow, the National Trust's Wild Child bus will be stopping off in Bristol to provide ideas on outdoor activities.

The first 50 Evening Post readers to arrive at the open-topped bus by 2pm tomorrow will get a free family ticket worth £30.

On the bus, which will be parked in the centre near the Hippodrome from 10am to 4pm, there will be lots of information about wildlife and wild activities families can do around the Bristol area this summer.

From hunting minibeasts at Tyntesfield, doing a nature trail at Dyrham Park, spotting bats at Lacock Abbey and finding wildflowers at Stourhead, there's plenty to keep all the family busy.

Within only a few miles of Bristol city centre, there are also National Trust properties at Blaise Hamlet, Clevedon Court and Westbury College Gatehouse, as well as Leigh Woods.

All these places are owned and managed by the trust, Europe's biggest conservation organisation, which has more than 3.5 million members based in the UK.

National Trust spokesman Maurice Flynn said: "Despite ever-more complex forms of entertainment aimed at children, the childhood pastimes that adults have cherished for decades remain the simplest and most easily obtained."

A survey by the National Trust of people living in Bristol found that nearly 80 per cent of children say they want to get outside more as they spend too much of their time indoors watching television or playing computer games.

To combat this, the National Trust launched the campaign to get families to go wild this summer and have lots of outdoor fun at National Trust properties across the South West.

The survey found that in the South West, playing in the park was the favourite memory for 24 per cent, with building a snowman and sledging coming second (19 per cent) and swimming in the sea, lake or a river third (18 per cent).

"Last year, the National Trust found that children spent so little time outdoors that common British wildlife was alien to them, with one in three unable to identify a magpie and half confused between bees and wasps," said Mr Flynn.