Equity investment in LATC

I''m looking for some guidance re: drawing up terms & conditions/agreement for an equity investment being made by the Council in a new wholly owned company.
Background - this is a property company and the equity investment represents part of the value of the properties being transferred by the Council into the company. The total investment is part loan/part equity.
Has anyone had to deal with a similar funding structure?
Thank you
James Byrne
East Herts DC