Just had to check what a Lee and Perrins had on it. It is "Worstershire" but everyone would say "wustah". Oddly enough, we were talking about the stuff the other day and were reminded how we liked Mushroom ketchup - looks like Burgess has gone btw - not that I think there is a pronounciation issue there.

Sen Where I lived it would have been heddlu gogledd cymru (North Wales Police). I think dd is softer than th.