Pontius,
the Searchwater 2000 as fitted to the Mk7 Sea King has a much greater role than just AEW. That is why they are now designated ASACS. They also have the ability to support troops on the ground. This role was pioneered during the assault on the Al Fawr peninsula in GWII and utilised in many joint exercises since, such as supporting the Royal Marines during Ex Northern Lights in Norway.
As with most things in the Navy (crap airframe, great kit)!