Today will see ‘national treasure’ Dame Julie Walters heading to Cornwall in the third episode of her Coastal Railways TV series on Channel 4 (8pm).

Her TV documentary journey took her through the Cornish Times’ patch on the Great Western Railway mainline from Plymouth to Liskeard and then down the branch line to Looe. Her next destination was the village of Polperro and the TV film crew also dropped in at Talland Bay.