Regarding joint and several liability, this was my story, pulled from another thread here....
"Some years ago I split up with Mrs Secure Mk I.
I was left to pay the mortgage while she lived in it rent free without making any payments. It got to the point where I could not pay for me and the house I was not enjoying, so I had to give up. The RBS (mortgage co.) basically were chasing me for in excess of £33K.
I did not want to face bankruptcy, but the RBS were unrepentent. They wanted their money back from me and me alone, despite the fact that me & my ex had signed the agreement together, "jointly and severally".
I scraped together as much as I could with the help of family (a couple of grand I believe) and told the RBS (via my solicitor) that this was all I could offer them in full and final settlement of my debt and if they would not accept it, I would declare myself bankrupt. Thankfully, they accepted and I was freed from the debt. But I have to say that I believe much of it was of their own making."
They did nothing to trace her because they knew they had me to fall back on. They took absolutely no account of the fact that I needed somewhere else to live, I could not stay in the mortgaged property (I was being abused and that is why I left. In fact I left immediately after she shoved me down the stairs....) and could not afford to pay the mortgage and rent costs elsewhere. They did not care. Luckily for me, my solicitor got a letter from them stating that I am now debt free.
Because, guess what? Many years later, I got a letter from the RBS demanding I settle my mortgage debt with them.....
Cheeky b'stards!