Staying well away from the politics:
SARDA: Members are normally taken from Mountain Rescue teams and cover MR areas. Are trained extensively in mountain operations. In the public eye are normally seen as looking for lost or injured walkers and climbers, however, are frequently used in lowland searches for lost persons. Are trained by their home MR team prior to becoming a handler. Assessed under NSARDA standards appropriate to qualification (i.e. Mountain/Lowland).
LS Dogs: Members maybe members of ALSAR teams but not necessarily, operate in areas covered by ALSAR units. Used for missing person searches and body recovery searches (not referred to as this though). Undergo ALSAR SAR Tech course or equivalent and constant in-house training organised by their home unit. Assessed under LS Dogs standards (Lowland only).
Both organisations will assess and qualify dogs in airscenting and some other disciplines, details of both can be found in the ACPO Search Management & Procedures document which Cheshire should hold (If not let me know and I will get you a copy)
Pete.
PS. Please lets not have this turn into a bun fight like the last time it came up.