At her annual carol service, the Princess of Wales will deliver a Christmas message about the importance of love which she says is “the greatest gift we can receive”.

Kate has written a letter for the 1,600 Westminster Abbey carol goers, including members of the royal family.

In the letter, she tells them “love is the light that can shine bright, even in our darkest times”.

Her message, featured with the order of service for the event on Friday, will say: “This Carol Service is a heartfelt celebration of every one of you, and a reminder that at Christmas, and throughout the year, we must all shine for each other.

“Because in times of joy and sadness, we are all each other’s light.”

During the past year, Kate has returned to public duties after being treated for cancer while the King is still under the care of cancer specialists.

The service aims to provide a moment of reflection about the importance of loved ones, especially during difficult times.

Olympic cycling champion Sir Chris Hoy, who is terminally ill with prostate cancer, will light a candle as will Lindsey Burrow, the wife of former Rugby League star Rob Burrow who died in June following a battle with motor neurone disease.

The Prince of Wales and a host of stars including actor Richard E Grant, Downton Abbey star Michelle Dockery, Sophie Okonedo, nominated for an Oscar for her role in the film Hotel Rwanda, and Olympic swimming champion Adam Peaty, will make readings, linked to the theme of love and empathy.

Kate says in her letter: “The Christmas story encourages us to consider the experiences and feelings of others. It also reflects our own vulnerabilities and reminds us of the importance of giving and receiving empathy, as well as just how much we need each other in spite of our differences.

“Above all else, it encourages us to turn to love, not fear. The love that we show ourselves and the love we show others.

“Love that listens with empathy, love that is kind and understanding, love that is forgiving, and love that brings joy and hope.

“It is this love which is the greatest gift we can receive. Not just at Christmas, but every day of our lives. Love is the light that can shine bright, even in our darkest times.”

Kate is expected to be joined by her husband William and their children Prince George, Princess Charlotte and Prince Louis. The King and Queen did not attend the Together at Christmas carol service in 2023 but they have previously.

Singers Gregory Porter and Paloma Faith will perform and pianist Rosey Chanas will play a specially composed piece. The Westminster Abbey Choir will sing well-known carols during a service combining the traditional and the modern.

The guests have all supported others, whether friends or family, helped individuals through their work or volunteered, and they will be entertained with a performance by two soloists from the Royal Ballet and students from the Royal Ballet School.

Kate has spoken of the power of nature to support wellbeing and the Abbey will be decorated with sustainable festive decorations and foliage.

This year a “Kindness Tree” will be cited outside the Abbey for guests to dedicate a decoration to someone who has supported them throughout their life.

How to watch Kate’s annual carol service

The carol service will take place on Friday, December 6 but it won't be available to watch on TV straight away.

The event will be broadcast as part of the programme Royal Carols: Together At Christmas on ITV1 and ITVX on Christmas Eve.

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It will feature three films about the stories of people and organisations who have inspired, counselled and comforted others in their times of need.

Alongside the event at Westminster Abbey, 15 community carol services will take place around the UK in the coming days to give people a moment to come together and celebrate community work during the festive season.

Hosted by Lord Lieutenants, and supported by William and Kate’s Royal Foundation, these events will be tailored to their local communities and include elements of the Westminster Abbey service, including Kate’s letter.