Have you checked your area in bidb.uk ? May give some clues who's working around there.
Looks like it's FullFibre Ltd. Odd that they're putting their CBTs up at the same time as the OR ones, and how come the poles only have one or the other, rather than both?
Look lower down on the pole for a yellow marker with "Caution Overhead Fibre" printed on it. Dead giveaway.
No sign on there yet, though it's only just been fitted so probably hasn't had any fibres blown in yet. But it's clearly fibre related as it has the yellow striped duct on there.