I'm not sure that there is a labyrinth of tunnels connecting all the UK military bases through out the UK.
I do know of certain areas that have underground bunkers, with a network of tunnels that run for miles.
There is one of these in my village. It is used by a major telephone company at the moment(not BT), but three years ago, one of the "tunnels"
collapsed revealing the "secret" it once held. No one knew these existed until then. Apparently, going by local history, they were used during WW2,
but there is nothing to back this up either on the NET, or in the local libraries.
All we have to go on is hearsay from some of the older members of our village who served in WW2.
Still, it makes for interesting discussion over a pint or two.
edit for location..West Yorkshire
[edit on 10-9-2005 by Bikereddie]