Longtime Partner of Mick Jagger's Granddaughter Reported Missing amid Growing Concern

Vanished without a trace: The concern mounts as the Devon & Cornwall Police and the pub where he was last seen before he left the venue have shared missing person alerts online.

Assisi Jackson, the 33-year-old granddaughter of legendary Musician Mick Jagger, is searching for her longtime partner, Alexander Key, 37.

According to the U.K. police, Key was last seen on Friday, leaving his loved ones riddled with worry as they attempt to uncover information about his whereabouts.

Panic Grows as Police and Pub Launch Online Appeals

Key was last seen at approximately 2:20 p.m. on January 23, 2026, inside the Cobweb Inn, a well-known pub in the coastal village of Boscastle, Cornwall. Surveillance footage captured him seated at the bar, dressed in a bold red patterned jacket layered over a dark hoodie, and paired with loose-fitting pants and white sneakers.

His platinum blonde hair, styled in a voluminous sweep, made him easily noticeable, a detail many of the appeals have highlighted in hopes it might jog someone's memory.

The Devon and Cornwall Police issued a public statement and missing person alert two days after Key was last seen, sharing photographs of him and confirming that he had not been seen since leaving the pub that Friday afternoon. Described as being of medium build with bright peroxide blonde hair, Key is also said to be someone who normally dresses in vibrant clothing.

Authorities expressed growing concern for his welfare, noting that extensive searches and inquiries are underway.

Their Facebook post includes two clear images: a close-up selfie showing Key's face and hair in sharp detail, and a second showing him outdoors in the red jacket, a critical outfit reference for those who may have encountered him.

"If you have seen Alexander, or know of his whereabouts please call police immediately on 999, quoting log number 847 24th Jan [sic]," concludes the authorities' public notice.

The Cobweb Inn echoed this urgency in their own social media appeal, which was posted on Sunday, January 25. Their message, written in capital letters to convey the gravity of the situation, asked patrons and locals to think back to that Friday afternoon and report any possible interactions or sightings.

Alongside their statement, the pub shared a still from their internal security footage, showing Key seated at the bar, his posture relaxed. Another angle, shared by Cobwebb Inn, in the comment section of the post, offered a view of the outdoor seating area, where Key is seen walking toward the adjoining street.

Jade Jagger Joins the Search as Family Alarm Deepens

The effort to locate Key has quickly extended beyond law enforcement and local businesses. Jackson's mother, Jade Jagger — daughter of the iconic "Paint It, Black" rock singer — joined the public appeal by reposting the police's Facebook notice to her Instagram feed.

The gesture reflects the family's deepening concern and mobilized a broader audience, inviting thousands of followers into the search.

While representatives for Jackson's mom and Mick Jagger have yet to publicly comment, the repost serves as a quiet but powerful signal of just how seriously the family is taking Key's disappearance.

Concern Continues to Mount as Family Awaits Answers

As the hours stretch into days, the search for Key continues with mounting urgency. What began as a quiet concern among loved ones has now grown into a community-wide effort — one amplified by social media, public vigilance, and a family's unwavering hope.

While questions remain and the investigation presses on, those closest to Key are clinging to the belief that answers are still within reach, and that someone, somewhere, holds the missing piece that could lead him safely home.