The previous goverment put a lot of pressure on lenders when the financial crash came to slacken off the reposessions as that would have had a dramatic impact on the economy.
As it is that caused a very soft crash in housing prices, hence imo we still haven't reached as low as we will go, but thats off topic.
Speak to your provider asap, they always say they are more sympathetic to your situation as soon as they know. Talk to them about payment holidays etc, or reduced or deferred interest.
Is this a real possibility or a maybe?
Budget budget budget, account for every penny, seriously look at every penny being spent, knock on the head everything you do not really really need.
Whats your position on family (ie are you single, couple, family etc?) one easy get out if you can is to move in with family and rent your property out. If not could you rent somewhere much smaller and rent yours out for more? This gets tricky but look at all angles.
What assets to you have, can you sell stuff... its a lot less painful than losing your house.
Whats your equity? Eg If mortage is 80k on a £250k house you stand more chance of an easy deal with a lender, if its £80k mortgage on a £70k house you will have a harder time.
Do everything you can to avoid reposession, whilst they do have duties now, they will as said probably auction or sell as repossessed which is likely to achieve 80-90% of real value. People specifically look for reposessed properties to get them at a discount.
Worst possible case if you get repossessed and they have to sell it, if they make a loss they will be after you. Bear in mind they will incur extra costs to sell, estate agents, auction fees, etc so deal with it NOW