My first guesstimate was 8p but now a bit less than yours maybe 12/15
changes in hours feels like the early indicator the end isn’t far away .
I think most will rise this year maybe a little less than @peteblue ‘s suggestion . There are certainly a few bars I can think of that are currently over charging that might have to bite it rather than pass it on .
It was shut for three months earlier on in the year, as the old landlady handed the keys back, due to not being able to make it work.
It’s tragic.