I've tried a number of marmalades, but to my taste, Golden Shred is amongst the best. The only ones that are better are those that have Scotch whisky in them :)
My only criticism (apart from the lack of whisky in it) is that they (Robertson's) have replaced the traditional golliwog with that soppy, English, "Paddington Bear" character on their packaging. We used to collect the golliwog badges (pins) when we were kids.
Add a little Scotch to it before
The Devon Cream Company