Is this for a television series, or docu drama or major motion photo?
The last time I saw a Wessex in a movie or tv series was Jame Bond 007 The Spy Who Loved Me, with a SAR Wessex lowering 007 (Roger Moore) and Major 'Triple X' Amarsava (?) (Barbara Bach) onto the USS Wayne SSBN. Also at the end when the escape pod with 007 and Triple X, floats into the HMS Fearless, with the ship's Wessex pair on flying stations.
Then there was the PD James - Commander Adam Dalglish mystery played by Roy Marsden. Commander Dalglish has solved the crime, kinda confronted the murderer off the Norfolk coast but the killers house or boat is being washed to sea and the RAF SAR Wessex is rescuing the detective, while leaving the killer to their fate.
Unnatural Causes (TV Movie 1993) - IMDb
Wondered it would be better to have an S-58T shipped over here from the States? Admittedly, the nose is way different, but at a stretch with some Pinewood studios finest, and special effects....then more of an option.
Cheers