Tim,
I assume that your grandfather was on "fire watching" at Manchester Town Hall during the Manchester blitz. A brave man. I was 16 at the time and spent two freezing nights in our air raid shelter, my father disappearing on his Air Raid Warden duties to return from time to time to see that we were OK. I was abroad at the time, but I believe in 1944 Heinkel 111's visited the city launching V1's. Even at this length of time, the proceedings on those nights and the months following are still quite vivid. Amazingly, I still went to work each day despite the blitz. It was the thing to do.
Bigred,
My knowledge of the Home Guard is limited. I do recall that when first issued with uniforms these were "denims". Previous to that the recruits wore arm bands with the letters LDV thereon. I recall that they were issued at one time with Canadian Ross rifles and "Tommy Guns" of the era of Chicago gangsters.
PhilipG.