In 2019 my sister a very healthy 79 old and not on any medications had purchased flights to Sydney for a 3 weeks holiday from the UK and applied online for visitors visa ( stays up to 3 months) having done this before with no problems. Much to her surprise she was flagged for X-ray and health check being over 75. This entailed a visit to an Australia House designated only doctor for a full health check and her nearest being in Harley St, London or Southampton. At this point too late to cancel trip she had to travel over 50 miles to endure a ‘stripped down’ medical at a cost that was nearly as expensive as the air fare. At the time she and her daughter (working in solicitors office) checked that medical was really needed re the visitor visa she required and not a mistake
Needless to say my sister will not be making a return trip. I still find it unbelievable that this happened. My sister already had return flights and Travel/ health insurance cover neither taken into account