Addie
Chef Extraordinaire
Wyshiepoo - Cake strips - I've never heard of these. Where did you find them - "Lakeland", my source of all things baking, doesn't seem to have them.
My mother used to put a double strip of brown paper round her Christmas cake tin to prevent the sides of the cake over-cooking, which I suppose would serve the same purpose.
Re the bake time. Yes, I would think they would increase the baking time
http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias=aps&field-keywords=cake+pan+baking+strips
Amazon has them. Check with Amazon.com/UK to see if you have them there.