Leonardo DiCaprio paid a visit to a new restaurant in Edinburgh run by the social business Social Bite, which provides training and employment opportunities for homeless people in Scotland. The Titanic star was served a meal prepared by four people with homeless backgrounds at the venue, called Home, which is a joint venture between Social Bite and the local restaurant group Maison Bleue.
The naturalist Steve Backshall has become an ambassador for the anti-litter charity Keep Britain Tidy. The Deadly 60 presenter said: "Litter dropped in a British street is a horror show for wildlife, so I'm supporting Keep Britain Tidy."
The Spandau Ballet singer Tony Hadley performed at a Christmas carol concert to raise funds for the children's hospice charity Shooting Star Chase. Hadley is vice-president of the charity.
The actor Peter Egan helped to launch the Animal Replacement Centre of Excellence, a joint venture between the Blizard Institute, Queen Mary University of London and the non-animal research charity the Dr Hadwen Trust, of which he is a patron. The new centre aims to further develop research methods for human cancer without the use of animals.
The band Belle and Sebastian have become ambassadors for the Prince and Princess of Wales Hospice in Glasgow. Lead singer Stuart Murdoch visited the hospice and met sisters Daisy and Holly Miles, whose father David was given end-of-life care by the charity.
The BBC newsreader Sophie Raworth took part in a stair climb at the so-called Cheesegrater building in central London in support of the Rainbow Trust Children's Charity. The Grate48 challenge - named after the number of floors in the building - raised £75,000 for the charity.
The presenter and actor Denise van Outen will lead a 187-mile bike ride in India in March to raise funds for Brain Tumour Research. The event, called the Nicki Waterman Kerala Challenge, is named after a fitness trainer friend of van Outen, who died in August aged 53 after a 15-month battle with an aggressive brain tumour.
Famous faces including the actors Joseph Fiennes and Priyanka Chopra and the comedian Jo Brand have given their support to a campaign by the charity Lepra, which works to tackle neglected diseases, including leprosy. The #GivingShoesday campaign, which was launched on Giving Tuesday on 29 November, encourages people to each donate a pound to the charity for every pair of shoes they own and highlights the custom-made protective footwear the charity provides for people with leprosy to protect them from further disabilities.
The actor Sam Heughan has been named as Scotland president of the blood cancer charity Bloodwise. Heughan, who plays Jamie Fraser in the television series Outlander, has supported the charity since 2011.
Tom Fletcher, from the band McFly, has been announced as a patron of Whizz-Kidz, which provides wheelchairs and mobility equipment for disabled children and young people. Fletcher became involved with the charity after he approached it for advice while writing a book featuring a lead character who is a wheelchair user.
The Homeland actor Damian Lewis has urged people to make donations to the emergency aid charity ShelterBox to support those people who have been displaced by the fighting in the Iraqi city of Mosul.