Kate Middleton, known as Catherine when she signs, and a Solo Royal Cypher has been traced on a letter. The Princess of Wales’ message showcased two rare aspects. On November 24, 2025, Kate Middleton, 43, shared a letter for The Forward Trust’s Taking Action on Addiction Campaign to back Addiction Awareness Week. This special letter contained her personal signature and royal cypher. Kate Middleton, who is a patron of The Forward Trust, a British charity aiding individuals affected by addiction, crime, homelessness, or long-term unemployment, initiated the first Addiction Awareness Week in 2021. In the letter, she expressed her support for the crucial campaign and commended the progress in understanding addiction and eradicating the associated stigma.
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The letter was embellished with her solo cypher, imprinted in gold—a seldom-seen symbol featuring a “C” for Catherine beneath a crown, situated above “Kensington Palace,” the primary office for her and Prince William. This monogram is typically spotted on official correspondences from Kate, like the invitations to her “Together at Christmas” carol service in 2024. In the note, Kate emphasizes that addiction is not a choice or personal failure but a complex mental health condition necessitating empathy and support. She calls for increased conversations surrounding addiction to remind individuals and families coping that they are not isolated. In her infrequently-seen signature, written as “Catherine,” Kate closes the message, a name that Prince William often uses for her.
Kate Middleton has always portrayed her name as “Catherine,” and her signature is not commonly displayed since the members of the British royal family are cautious about signing autographs to avoid potential forgery incidents. During a visit to the Chelsea Flower Show in 2022, Princess Kate responded diplomatically when questioned about her inability to sign her name on children’s drawings, stating solemnly, “My name’s Catherine. I’m not allowed to write my signature, it’s just one of those rules.”
The BBC faced backlash and subsequently issued an apology to the royal family for referring to Kate Middleton as the Princess of Wales during their Remembrance Day broadcasts. In response, the network stated that they had received complaints regarding the incorrect title usage and expressed regret for mistakenly identifying Catherine as Kate Middleton. PEOPLE intends to address her as Princess Kate and the Princess of Wales. However, for readers’ ease, the term “Kate Middleton” will still be utilised in headlines and initial references, as it remains a commonly searched term for the royal family.
This unveiling of Kate Middleton’s signature as “Catherine” and the appearance of her solo royal cypher in a touching letter for a noble cause highlights her commitment to supporting vital campaigns. Her focus on addiction awareness and advocacy for empathy towards those affected demonstrate her dedication to making a positive impact within her royal role. Kate’s use of her full name in her signature and the display of her royal cypher adds a personal touch to her communication, reflecting her authenticity and sincerity in championing important causes.