Sorry to hear about the slow up in the work for you RS.
The normal chin wag at the wholsalers confirms it's slowed up a little for the larger electrical companies here just up the M4 from you.
Also been told that some of the local building contractors are getting slower at paying just lately, I've not experienced this yet but then I'm only in with one builder at the moment.
I seem to be doing ok for now lots of enquiries & bookings but then I am a one man band so none of the wage bills you will have.
Have noticed the wholsalers are now getting pretty quick sending overdue account reminders ( had one this morning for £14.76

one that slipped through end of last month).
What can you do?
How about getting some flyers made up (I use goodprint a online print company & use glossy post card size ones printed both sides) then get your lads/lasses to do a drop around the domestic area industrial & commercial sites or at the local diy sheds on a slow day. It's an idea
Anyway hope it picks up mate.