Have you ever made Banoffee Pie?

Banoffee Pie has to be one of my family's favourite puddings and in fact it was chosen by my daughter Lucy instead of a birthday cake last October. 

Now I can actually lay claim to being one of the first to know about Banoffee Pie because I worked for the publisher who brought out a book written by the owners of a restaurant called The Hungry Monk (think it was in Eastbourne.) Well, they are meant to have invented the recipe for this delightful banana, toffee and cream confection, which has brought grown men to their knees and grown women to give up on their diets!

Now the question is - or to be more precise - the questions are:  
 - pastry case or crumb base?  
 - boil condensed milk in the can for three hours or take out of can and heat until boiling in a pan? 
 - plain whipped cream, or whipped cream with coffee essence? 

I guess it's down to personal taste, but I'd love to be reminded of the original recipe so if you could help that'd be great. I thought I'd include my own version of events in case just reading about this delightful dessert has set you dribbling...