Greetings, I was pointed in this direction www.askyourneighbour.co.uk   This could be another friendsreunited (not as per) success story - they want you to promote your business and I have advertised and that is the first time in years. I think they have a winner.
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http://www.openmarkethomebuy.org.uk
http://www.sharedownershipmortgages.org.uk