Ownership help after partner moves abroad?

My ex purchased a property by way of a mortgage.  He lived there alone for several years, before meeting me. He asked me to move in with him, I agreed. We decided that we should make the house ‘our’ space, by re-decorating it from top to bottom.  

I did all of the painting at the property, and built the bar in the kitchen. He told me, ‘You have really made this our home.  We will share it together forever.  I want you to share ownership of the house with me.’  However, he never contacted the Land Registry to make me a joint tenant.

I used my earnings to pay the utility bills at the house, as well as to buy items for the gardening etc. He suggested we would be together forever.

One day he leaves me saying he is moving abroad. He left a cheque for £6,000 writing that this is to help me ‘set myself up somewhere else’.  In a post-script, he adds that the house has been sold, and that I will need to vacate by the end of the month. The house had been sold to man he worked with.

What can I do?

Stephanie