"Joe Patrick" wrote in message
...
AFAIK it's normally one person per tag. Remember that these scumbags
are
generally young / unemployed / unemployable so can dedicate their whole
day
to this ...

You seem to know too much about this matter :-)

What are you saying?! ;-)

There's lots of stuff on the internet about how to prevent and reduce this
kind of crime (Google is your friend, also the BTP have a few pearls of
wisdom on their site).

More should be done to stop this (see: "Ways to Reduce Vandalism" Thread)
such as Live CCTV monitoring with communication between CCTV operators and
station staff, drivers and police officers.

I'd agree. Problem is it all costs money. Whether it would be cheaper to
reduce this crime rather than clear up afterwards is another matter!