Certainly is tabtab! It has changed a bit since last year when I took this shot: link.
Looks like a few boards have fallen off the bottom, but it makes a nice effect.
Thank you! I was thinking it might have been at the back of the IOS car park between Co-Op and The Baba, so was highly disappointed when I got there. Walked back along the Prom and luckily it caught my eye. Thanks to sparky who put me on the right trail with her guess!
Right on Tabtab13, only just come back from a marathon shopping run with my mother!! glad you got it, I was going to mention about the boards but Denanmor has already said about them....well done!