RAISING £50 million to save Canterbury Cathedral from crumbling away and securing its future is a "daunting but exciting" challenge, says campaign director Brigadier David Innis.

"We are being forced to act as the Cathedral is suffering serious damage through both old age and modern pollution," said Brig Innes. "Alas, time is not on our side and if we don't start now, the rate of decay and damage being inflicted on this unique place will increase dramatically with potentially disastrous consequences.

"Canterbury Cathedral is recognised throughout the world as the Mother Church of the Anglican Communion and enjoys an international reputation as a place of worship and pilgrimage. It is also a World Heritage site, an international icon, a symbol of global civilisation and one of the world's greatest buildings."

A survey of the Cathedral had revealed serious structural problems and numerous areas of rapid decay, which are complex and costly to repair.

The Lord Lieutenant of Kent, Allan Willett, who is chairman of the Trust Fund, said the future of the Cathedral was hanging in the balance.

"Despite its turbulent 900 years of history, it is the next few years that represents its greatest time of danger," he said. "It is vital our generation takes steps now to secure the Cathedral's future not just for tomorrow, or the next decade, but for ever."

The former Government minister and writer Roy Hattersley, a supporter of the appeal, described the Cathedral as 'England in stone', which he admired with 'awe and wonder'.

The Dean, the Very Rev Robert Willis, said the Cathedral was "precious and known and loved around the world".

He pointed out the Cathedral received no Government or English Heritage funding, and revenues from entry fees, rents and the shop only covered running costs and basic maintenance. He said an appeal was needed every 30 years to boost funds, but this time it was more urgent than ever.

The aim was to not only repair the fabric of the building but to enhance and enrich the experience for people who visit it. He added: "We are stewards of the building, but it belongs to the world."