[time-nuts] GPS Jamming in the UK

[GandalfG8 at aol.com]

I've not come across this before and when a friend first  fowarded the link 
from another group I thought it was a spoof, and  still only half convinced:-), 
but I've just copied this from the official  Ofcom Website in the UK...... 
"The Ministry of Defence conduct occasional tests on military  systems which 
may result in some loss of service to civilian users of the Global  
Positioning System (GPS) including in-car navigation devices and networks which  rely on 
GPS signals. Ofcom seeks to provide citizens and consumers with  information 
about possible interruptions to these services via these email  updates giving 
advanced notification of these tests. It must be emphasised that  this 
notification process only warns of future jamming excercises that are  brought to 
the notice of Ofcom and may not cover all jamming exercises. It  cannot be 
assumed that any loss of service is due to jamming exercises." 
There's an option to sign up for email notification..... 
_http://www.ofcom.org.uk/static/subscribe/select_list.htm_ 
(http://www.ofcom.org.uk/static/subscribe/select_list.htm)  
Anyone come across this before or actually experienced any  identifiable 
jamming of signals? 
regards 
Nigel GM8PZR