TV Guide BBC One Wednesday

Today's guest judge is Michelin-trained chef Poppy O'Toole, who challenges contestants Dawn O'Porter, Chris Hughes, Jaki Graham, Jamie Lomas and Michelle Heaton to recreate one of her favourite dishes, each of which contains an element of potato - Poppy's favourite ingredient. After that, they are tasked with serving up a two-course dinner party menu to secure their place in the quarter-final

On a mission to find out the identity of the Callaghans' contact in Shetland, Calder piles the pressure on Louden. He reluctantly agrees, but ultimately ends up in grave danger. Stevie is elated to have her sister Amy all to herself, but her mood sours when Calder asks her to come in for further questioning. Sandy tells Tosh that he believes Robert Tulloch was a corrupt police officer. Aware that the revelation will unsettle Billy, Tosh decides to secretly investigate further

A round-up of today's headlines

Action from the matchday five fixtures, including Arsenal v Bayern Munich at Emirates Stadium, Paris Saint-Germain v Tottenham Hotspur at Parc des Princes and Chelsea v Barcelona at Stamford Bridge. Arsenal and Bayern both went into their match boasting a 100 per cent record so far and PSG and Spurs met in a repeat of the UEFA Super Cup, while the Blues and Barca were looking for wins to move towards the top eight