I would just like to add to this,i am so sorry you have found yourself to be in this situation.
My thoughts are with you.
Many Tears Rescue is fab they rehome their dogs very quickly,and make sure they go to the right person.
I have alot of time for Sylvia who runs it and she is lovely.

Here is the contact details and they have people all over the country not only in Wales.
Phone her up and have a chat she is brill.

Many Tears Animal Rescue - Contact us & directions