EGCC Rwy 24.
Are you sure it wasn't three or four weeks ago? The reason I ask is because we did have a Royal Navy Merlin helicopter do quite a prolonged low-level task at Altrincham grammar school. If I recall correctly, it was from a ship in the Mersey and was doing some sort of recruitment demo. I'm pretty certain it didn't land there, but was in the area for about 10-15 minutes. Could this be it?
Spiney