According to the BBC:
The newly built hull of the RRS Sir David Attenborough is now standing on the slipway of the Cammell Laird yard in Birkenhead, awaiting launch day.
Weather and tide permitting, she should slide into the River Mersey on Saturday.
The £200m vessel will replace the James Clark Ross and the Shackleton, which between them have almost 50 years' service in support of UK polar science.
She represents the largest commercial ship built in Britain in three decades.
Great news for British shipbuilding!
https://www.bbc.co.uk/news/science-environment-44780708