I listened to this today. It's interesting that the lack of squealing and silly music gives the whole thing an air of old fashioned gravitas. Although you just cannot help wondering what was truly causing those noises in the church - it's all very well leaping to conclusions as the well-spoken investigator often seems to do. There is a bit of well-placed scepticism too! It's still worth raising the hair on the back of your neck for. (I don't know what its origins are but it's evidently old and professionally made).
Also you may like to see Peter Underwood being interviewed in Borley here
and inside the church (including some of the recordings on the previous radio programme):
One thing that struck me was that it's all very well complaining about ghosts messing with your recording equipment but it does rather rely on ghosts keeping up with what modern technology is for

However, anyone who can keep calm in a pitch black church whilst hearing noises and seeing weird things, and not run for the hills, gets some respect from me.