This month I finally called in the Rat Man to rid me of the menace in the loft. He managed to attend 2 out of the 3 scheduled visits. Having time off work and his no show did not go down well. In any case the traps are being avoided but they do like the additional bait they are being provided with. So after 2 visits and not hearing any movement above me I was a little happier. This evening however, following yesterdays no show, I hear scurrying once again. So in summary I have had 3 afternoons off work for no improvement in the situation whatsoever.
I am getting very close to the nuclear option of stripping out all the loft insulation and permanently denying them access by any means necessary (even if it means taking the roof off). It nibbled though my network cable and I have a zero tolerance approach to network intrusion.