"A Success!"
I was a little nervous about using this pan / Lakeland recipe but it was a success (although quite a dense cake)! I followed the Lakeland recipe exactly (the full 6 egg recipe for one large pan - that wasn't entirely clear in reading the recipe). I cooked the cake at 150 c fan for 2 hours, frequently checking. I also covered the top with foil after 1 hour and covered the outside of the tin with newspaper. I also balanced the tin on a cookie cutter and stood both on a tray. For decorating I followed a video on Youtube and used hexagon / pentagon cutters - great result.