I've seen a couple of episodes of this series and quite liked what i saw. It did bring home what the grandparents went through. It explained the different type of German bombs that were dropped on cities like Liverpool/London and the different blast effects on homes/streets in detail. Also, eye witness accounts gave credibility to the mock up explosions....
This has been on another channel before or a very similar program with Tony Robinson, showing what effect the bombs had, quite interesting