Thanks Robert I have been busy today sealing and caulking between the skirting and floor
in my Living Room.
Still a lot to do though. I am following Hugh's great advice.

My caulking and pest control powder seems to be having results so far.
I brushed in insect powder in all the gaps between the floor and the skirtings.
I then pushed in some foam door/window draught excluders then caulked.
I got up this morning and I found NONE !!! So far so good..
That's one battle won. I need to fight on to win WAR.

Don't forget Dave when using a vacuum cleaner, to empty the bag everyday, otherwise any eggs collected will hatch in the machine in
the warmth of your home.

Hugh thanks for letting me know that.
I was thinking if it was ants I am trying to exterminate I could refer
to the little buggers as " THEM ".

Yeah," Them" 'ere wigs, the little bastards, the females have straight pincers, the males curved. Not that I'll be tempted to have sex with one, but so we know, I've been reading up on them, clear all vegetation from around your home, like a gravel path, also good as an alarm for burglars, but keeps these pests at bay.