West Mercia Special Constabulary does not use the SC logo as all Officers under Inspector ( regular and special ) have the West Mercia Police Crest on their epaulettes , all collar numbers have four digits , beginning with either a 4 or a 5 .
West Mercia Special Constabulary does not use the SC logo as all officers under the rank of Inspector ( regular and special ) have the West Mercia Police crest on their epaulettes . 
 All collar numbers have four digits , beginning with either a 4 or a 5 .