ELUSIVE BEEF ROAST

My feedback is that despie the advertsing of Quorn products it is frustrating that I can never find the ones I want to buy !! That is - the QUorn BEEF roast tried, liked but can never find again - never found the QUORN HAM ROAST AT ALL !! WHY ?????? We are near a large city Bristol - in fact in south glos with all the usual supermarkets not far away but can NEVER find Quorn BEEF or HAM roast ??