Apologies for resurrecting this thread, but I regularily check the chart updates on the CAA website, and there is no reference to this airspace in the list of updates.
Amendments for Southern England and Wales - Edition: 34, 10/04/2008 | Aeronautical Charts | Airspace Policy
And I notice the AIC is no longer listed on the AIS website. Does this mean it's no longer valid ? Or if it is (I presume it is), how would I find out about it if I didn't already know ? I check these two sites regularily, but if I'd been away for a few months and missed the AIC, how would I know ?