[Your address and contact number]
[Warranty provider's address]
[Reference: warranty number]
I write in relation to the above warranty.
On [dd/mm/yy], I purchased [details] extended warranty from [add details] for the sum of [add details].
I have decided that I wish to cancel the warranty.
The Supply of Extended Warranties on Domestic Electrical Goods Order 2005 states that I am entitled to a pro-rata refund for each full month remaining on the warranty at the point of cancellation.
As there are [x] months remaining on the warranty, I am entitled to the return of the following sum [£xx].
I look forward to receiving the sum of [£xx] in the next 14 days.