Sh1n (@hey_itsmyturn) reposted the following notice from @UK_MTO:

UKMTO WARNING 191-26

The full warning is available from UKMTO:
https://www.ukmto.org/-/media/ukmto/products/20261101-ukmto_warning_191_26.pdf?rev=d4620238ffd446959c914049b1474287