[According to Boeing's website, 16 airlines have taken delivery of the 737 Max 8.
TUI Group has 15 in its fleet and said it is in close contact with the manufacturer,
but has no plans to take them out of service. It is the only airline to have any
such planes registered with the UK's Civil Aviation Authority.]
Despite loads of other nations stop flying them
the UK Still is
https://www.bbc.co.uk/news/business-47519929