Greetings and Welcome LeeH,
I don’t have an answer for you.
Although, I have taken a mild interest in the comings and goings of this departure board over the last month or so. You may have noticed the same thing. So, if none of what I’m about to write is news to you, then I apologise.
Firstly, they got rid of the previous yellow one a little while ago.
Then, installed a new, slightly smaller departure board (a rather lovely little black number, if departure boards are your thing), into the old pole and bracket. It looked a bit clunky, though, as it was not quite fitting properly into the old bracket perfectly.
Then, the whole old pole and bracket including the new departure board departed.
Now, this morning, for the first time, I noticed a new pole and bracket have been installed in roughly the same spot. Things are happening, in the right direction, I can report to you. So, it looks like we are just waiting for the new departure board to arrive. Again. Sometime soon.
Anyway, welcome again LeeH and I’m glad that you are no longer lurking in the shadows of SE23.com.