There's good news....
UK residents can apply for a Global Health Insurance Card (GHIC) to access emergency medical care in the EU when their current EHIC card runs out. Under a new agreement with the EU, both cards will offer equivalent healthcare protection when people are on holiday, studying or travelling for business. This includes emergency treatment as well as treatment needed for a pre-existing condition.
https://www.bbc.co.uk/news/health-55624240
and there's bad news...
The United Arab Emirates is being removed from the UK list of travel corridors amid a spike in Covid cases. That means anyone who arrives from the UAE after 04:00 GMT on Tuesday now needs to self-isolate for 10 days, Transport Secretary Grant Shapps said. UK officials say Covid cases have risen 52% in the UAE in the last seven days and cite "a significant acceleration in the number of imported cases". It comes after Scotland removed the UAE city Dubai from its safe travel list.
https://www.bbc.co.uk/news/uk-55626672