Peterborough Cathedral has been awarded £200,000 to carry out urgent repairs.
The money is coming from the government’s First World War Centenary Cathedral Repairs Fund and will be used on the 19th century tesserae (mosaic) floor in the Presbytery, near to the High Altar.
The floor was identified in 2011 as being in a very poor state and in urgent need of renewal.
It is expected that the work will begin in May and be completed by December 2015.
In all, an estimated 21,000 small tiles may need to be re-set.
The work will be overseen by the cathedral architect and archaeologist.
This is the third time the cathedral has been successful in securing a grant from the Repairs Fund.
A grant of £14,500 was given towards window repairs and £88,453 towards repairs to stonework on the Old Baptistry gable.
Peterborough is amongst 31 cathedrals nationally to have been awarded grants in what is the final round of applications.
The Very Revd Charles Taylor, Dean of Peterborough, said: “We are enormously grateful for this grant.
This beautiful floor has been in a state of disrepair for some time.The Very Revd Charles Taylor
“This beautiful floor has been in a state of disrepair for some time which means that we have not been able to make full use of this part of the cathedral and it has been inaccessible to visitors.
“It is wonderful that we can now get on with the work and make sure that the building is in good condition as we approach our 900th anniversary in 2018.”
The Church of England’s 42 cathedrals are estimated to contribute around £220 million to the national economy every year through employment and tourism.
They welcome more than 11 million visitors annually, employ more than 7,000 people and are supported by 15,000 dedicated volunteers.