The 52 week period of continuing liability may cease when an employee changes employment. Whether or not an employee has entered into a new employment will be a question of fact. The contracts of employment will indicate if this were so.
The subsequent posting from Australia to Malaysia would be
considered to arise in connection with the new employment with the
UK company. The 52 week period would cease.
Had the UK employer simply posted him to Malaysia in
connection with the original occupation/employment as a General
Manager then the 52 week period would have continued in full.