Hi Justine!
Matt Huggins from Marsh & Parsons would be the perfect person to speak to about this! He is the Manager of the Tooting branch, and has helped me on a few occasions with rental properties (I was a renter).
His direct details are:
020 3817 4126
07983 363 634
MHuggins@marshandparsons.co.uk
If you'd like me to get him to give you a call back, please let me know and I'll pass on your details to him.
Good luck in your search!
Yvie