It is regarded as one of Norfolk's most beautiful ancient buildings.

But hundreds of years of history could be reduced to a pile of rubble unless £50,000 is urgently found to fix this building's dangerous, rotting roof.

The nature of the roof at St Martin's Church in Thompson, near Watton, means that if it were to fall, the rest of the building could go with it.

Builders who started work on the five cant scissor-braced roof have already declared it the worst they have ever seen and warned if they try to replace it, the whole building could fall down.

'If they take the whole roof off in one go, it could go down like a pack of dominoes,' warned Bronwen Tyler, from the church, which dates back to the year 1300.

'It is in an awful state.

'We had a site meeting last week where we were able to view the roof trusses for ourselves by climbing the scaffolding.

'The builders and architect say it is one of the worst roofs they have ever worked on in terms of damage and decay.'

As such they are trying to replace each of the 80 rotted rafter ends.

However it has meant project costs have shot up from what was originally expected, even though it has already benefitted from Heritage Lottery Fund money.

As such villagers have set up a fundraising campaign and website to save what they have described as a 'wonderful, medieval church which is regarded as unique'.

Mrs Tyler said of the building: 'It is so rare and people come for that – not because they're religious but because it is so historic.

'It is described as a gem by a great many people.

'We are desperately short of money to do all that needs doing to restore the church and face the prospect of cutting out some works in order to do the roof.

'We've got a band of people working to get it back to its beautiful state.'

It is not the first time St Martin's Church has been in a fight for its survival – it was one of the many historic sites in Norfolk saved by Prince Frederick Duleep Singh more than 100 years ago.

And Thompson is also well-versed in raising money for community projects – although the £700,000 for its new community hall came from the will of a single generous benefactor.

For more information about the campaign, visit www.stmartinsthompson.co.uk People can also donate at www.justgiving.com/stmartinschurchthompson Cheques and cash can be sent: to The Treasurer, College Farm, College Road Thompson IP24 1QG.