The UK IPO has confirmed that its extension of time to all UK trade mark and design deadlines will continue until 28 May 2020, when it will be reviewed.

This is known as "interrupted days".

Should the "interrupted days" be removed after 28 May 2020, there will be a further notice period of 2 weeks before deadlines return to normal. 

Therefore, UK deadlines look to be in place until at least 11 June 2020.