No there is nothing you can do.
I have to say this this a pretty unusual situation and applies to older properties only - I would hazard a guess this house is at least 150 years old.
Certain properties had from the start a convenant attached that makes the owner of the property liable for a proportion of the cost of repairs to the local parish church. In occasional circumstances the Church of England has used this convenant to call in expenses. Solicitors are now wise to this and will check when the land title is evaluated. Because your property has this convenant attaching, you are (correctly) being advised to take out an indemnity policy in the event it happens to you.
It may well be that the church is not even aware of this liability that you have - but it might find out. Shush!



