S4
https://static.independent.co.uk/s3fs-public/thumbnails/image/2013/08/13/12/bake-off.jpg
S5
https://static.independent.co.uk/s3fs-public/thumbnails/image/2014/07/29/09/Bake-off-contestants.jpg
S6
https://static.independent.co.uk/s3fs-public/thumbnails/image/2015/07/28/10/8948636-low_res-the-great-british-bake-off.jpg
S7
https://static.independent.co.uk/s3fs-public/thumbnails/image/2016/08/16/09/bake-off.jpg