NOTAM C1919 refers:
"DUE TO THE RESTRICTIONS APPLIED TO THE PROVISION OF RADAR SERVICES
CAUSED BY THE VOLCANIC DUST CLOUD PASSING OVER THE UK, FARNBOROUGH
RADAR CAN ONLY PROVIDE A BASIC SERVICE, ISSUE A VFR CLEARANCE AND
CANNOT OBTAIN CLEARANCE TO ENTER CONTROLLED AIRSPACE.
FROM: 15 APR 2010 13:10 TO: 15 APR 2010 21:00"
I am intrigued to know where Farnborough Radar can issue a 'VFR clearance'....