At 17:54 04 September 2006,
wrote:

Oh, and I
understand that UK military have neither TCAS/ACAS
nor other collision
avoidance, and many/most have no transponder either.

Chris N.

The last sentence is not strictly true as they have
IFF, a sort of super transponder with bells and whistles,
and it can be interogated by air traffic radars if
the pilot wants it to be, which in peacetime is most
of the time.