- Prior to becoming an actor and while serving as a Royal Marines Commando, Sean was asked to brief then British Prime Minister, Tony Blair on Commando fitness requirements to obtain a Green Beret.
- Sean is a former Royal Marines Commando Officer, undertaking what is regarded as the worlds most arduous initial military training at the infamous Commando Training Centre Royal Marines in Lympstone, Devon, UK.
- Sean is engaged to David and Olivia co-star Kate Braithwaite.
- Sean has written four books for classic Briitsh publishing house Haynes Publishing. These include manuals on Triathlon Training, Running and Royal Marines Commando Fitness.
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