Hi Scottish Flyer,
Have just checked my half-mil, Midlem is indeed only a couple of miles away from Selkirk... forgot about that one... well remembered India Mike!
Not sure what procedures are in place at Charterhall (or Midlem for that matter), it's definatly active though, anybody have any contact details etc.? Have only flown past it on a Navex (used it as a rather handy position fix!).
Smithy