Based on the robust and highly versatile RAF Wessex HC.2, the HCC.4 was given a VVIP interior, and had a special navigation systems fit, which included the (at the time) innovative Decca moving map display. 
List of Operators of Westland Wessex HCC.4 | |
| From | Organisation with model Wessex HCC.4 | |||||
| 1963 |
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| 1969 |
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| Construction Numbers on database of Wessex HCC.4 | ||||||
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Construction Numbers | Help Us | |
| C/N | Year | History | ||
 | wa627 | 1969 |  XV732 | |
| wa628 | 1969 | XV733 | ||