Only experienced and dedicated lawyers will work on your matter! No clerks or paralegals!
From a Mums and Dads perspective, the most common arrangement needing appropriate security documentation is a loan between family members or friends. Such loans should always be properly documented and where appropriate secured by way of mortgage or debenture charge (if there is a company involved).
Moneys should preferably not be advanced before all the relevant security documentation is in place. See Friedman Lurie Singh & D’Angelo before its too late to protect yourself.