SlipSlider - it is Class D. See, for example, the
CAA's guidance document :
What sort of ATC service can I expect?
Flight Information Service.(sic) Because you are operating within Class D airspace and below minimum safe altitude for IFR flight the RIS & RAS (sic) are not available within the route. The level of service you will receive depends on the level of traffic for the controller. If it is quiet you may be passed Radar derived traffic information but do remember, even if allocated a squawk you will NOT be receiving a formal radar service. There may, in fact almost certainly will be, traffic using the lane that is not communicating with Manchester.
Edited to say that there is
a proposal to release portions - e.g. the LLR - of the current Class D to Class G, but there has been no announcement yet.
Originally Posted by CAA
UPDATE 01 June
The consultation closed on 31st January 2009. A Consultation Feedback Report will be available in due course and NATS Manchester continues to negotiate with the CAA over the detail of a formal ACP application. Any changes as a result of a proposal are unlikely to be introduced before October 2009 at the earliest.