I was on the dole a couple of years ago and after a certain period of time , they paid the monthly interest on my mortgage, not any of the actual capital.
I've just found this which may help:
Help with paying your mortgage if you get Income Support or Job Seekers Allowance
If you are in receipt of Income Support or Job Seekers Allowance, the Department for Work & Pensions (DWP) should pay some of the interest on the mortgage.
You will need to complete a Housing Costs form in order to qualify for some help.
It is possible that you may have already completed this form wen you initially claimed for Income Support or Job Seekers Allowance but do not receive any help as yet. The reason for this is that there is a qualifying period for assessing help. This depends on when you took out your mortgage.
Mortgages Taken Out Before 2nd October 1995
For the first 8 weeks - you will receive no help from when your claim for Income Support or Job Seekers Allowance is awarded.
From the 8th-25th week - you should receive half of your Mortgage Interest payment.
From the 26th week - you should receive the Full Mortgage Interest.
Mortgages Taken Out After 2nd October 1995
For the first 39 weeks - you will receive no help from the date when your claim for Income Support or Job Seekers Allowance is awarded.
From the 40th week - you should receive the Full Mortgage Interest.
Be aware that the interest paid by the DWP is at a set rate. This does not necessarily match the rate that you are being charged by the mortgage lender. You would have to make sure that you took this into account when calculating what you need to pay including any arrears.