As an immigrant to NZ I can confirm the locals don’t give a flying fuck about you and see anyone as an interloper. He will have no support and he will be completely alone there.
This.
My daughter left for Australia about the same time as Theo/Beth/Lis. NHS workforce planning is so poor that half her year group were left without jobs after finishing their Foundation training. She already knew 14 others from the UK working in the same hospital before she arrived.
She has been lucky, being employed in a rotational position in her preferred speciality in a large hospital group in a major city. It is the first time they had employed non-Australians, and her lovely mentor is helping her navigate a career path despite the restrictions that flow from her lack of Resident status. She also has the advantage of having worked in a particularly stretched bit of the NHS where you don't survive unless you are able to work closely with the nursing team and other HCPs, leading to her being invited along for social events with a mixed group of Aussie and British nurses. Apparently a rare honour for a newly-arrived Brit doctor.
That said it is not that easy. The working culture different to the UK, somehow more individual and more ambitious. Her social life mainly involves young Brits and Irish enjoying what they see as a working holiday, with people constantly arriving and leaving. The climate is different, and though she is enjoying the outdoor life, she is missing the cultural depth of the UK. Working conditions are better, but different, with less autonomy, (her experience was of an NHS stretched to breaking point, so too much autonomy), and generous time off after a run of shifts.
Theo/Beth/Lis' experience is more typical in terms of jobs young British doctors are normally recruited to. A&E with its tough shift patterns, and somewhere remote. Australia is huge, and even places that look nearby on the map involve hours of driving.
The DM article suggests Theo/Beth/Lis's wife has gone with him. I assume that they will not keen to get involved in the burgeoning local LGBQT+++ scene that the DM describes. Do they have a job? Port Macquarie has a population of about 50,000. Smaller than Bridgend, Weymouth or Kircaldy. The climate is described a humid sub-tropical, described as being one of the best rated climates in Australia, but still challenging if you are from Fife. Many hospital colleagues will be civil and professional but keep their distance. In part because they will have seen too many Brits on short term contracts to want to reach out, but also because of the history. Whilst the brutal shift patterns will not be conducive to taking part in sports or other regular community activities.
I do not envy his wife.