Medal
Silver and circular in shape. The obverse of the medal shows the effigy of Queen Elizabeth II (shown here), while the reverse bears the image of an Eagle with outstretched wings surmounted by the Crown with the words ‘For Long service and Good Conduct’ around the circumference.
Clasp
Bears the image of an Eagle with outstretched wings surmounted by the Crown. When the ribbon alone is worn, a silver rosette denotes award of the Clasp.
Ribbon
Equally sized central stripes of maroon and dark blue flanked at the edges by narrow stripes of white.
Qualifying criteria
An airman who completes 15 years reckonable service from date of attestation or age 17½, whichever is later, shall be eligible for consideration and their conduct/discipline record will be checked. Airman currently reaching their 15 year point may qualify despite lowered conduct assessments. Awards are only made after a comprehensive check of an airman's record of service.
As this medal requires the recommendation of the individuals' commanding officer, it can only be awarded to serving personnel.
However, with effect from 1 April 2001, an airman who has not yet completed 8 years qualifying service (i.e was attested or aged 17½ after 1 April 1993) will become eligible only after 15 years service with consecutive conduct assessments of ‘exemplary’. There are a number of offences/misconduct which would normally preclude award of the LS&GCM.
An airman who, subsequent to award of the Medal, goes on to complete a further 15 years service shall be eligible for award of the Clasp to the LS&GCM provided that the conduct/discipline criteria have been met.
An Officer shall be eligible for award of the LS&GCM if 12 or more of the 15 years service has been in the ranks and provided that the other criteria have been met. An Officer shall be eligible for award of the Clasp if 22 or more of the 30 years service has been in the ranks and provided that the other criteria have been met.
Prior to 1 December 1977, 18 years service was required for consideration for the LS&GCM.
Full details are laid out in the Queens Regulations (RAF) Appendix 28C and AP3392 Vol 4 Leaflet 2006 Annex B