Polar ship construction gets under way

Construction of the UK's new £200m polar research ship, the RRS Sir David Attenborough, formally begins on Monday at Cammell Laird on Merseyside.

A VIP ceremony will see a crane lower a near-100-tonne segment of keel on to blocks on the firm's slipway.

Managing director Linton Roberts spoke to our correspondent Jonathan Amos about the importance of the Attenborough to Cammell Laird.