I found these podcasts of Sandy reading from the 44 Scotland Street books on the Scotsman website and thought people might be interested. I haven't listened to them but am fairly sure they will contain his trademark giggle.
Hope that works.
I also found out that Sandy wears 'crushed strawberry' corduroy trousers (like Mathew) and apparently there is a couple in New Zealand that pretend that they are Precious Ramostwe and Mr JLB Matekoni (from the No. 1 Ladies Detective Agency series). Not sure how that works but I'd love to be a fly on the wall. I hope she's a woman of traditional build.