BritJet Cabin Crew Sentenced to 9 Years for Smuggling £3.1M Cash

On 11 January 2026, Sienna Karthwell — a Senior Cabin Crew Member with BritJet, a UK long-haul carrier operating out of Heathrow Terminal 4, with eleven years of service on the airline's Dubai, Lagos and Istanbul rotations — was sentenced to nine years' imprisonment at Isleworth Crown Court by HHJ Caroline Pendlewood after pleading guilty on 14 November 2025 to 31 counts of removing criminal property contrary to section 327 of the Proceeds of Crime Act 2002, and one count of conspiracy to launder criminal property. Karthwell exploited her airside ID to walk sealed shrink-wrapped bricks of £20 and £50 notes through the unscrutinised staff channel at Heathrow on 31 inbound rotations between October 2021 and March 2025, collecting the cash from a Dubai-based hawala contact at her hotel on each layover and dropping it at a long-stay car park near Hatton Cross within ninety minutes of touchdown. The scheme moved £3,142,000 in total, earning Karthwell £198,000 in personal fees. A Border Force intelligence analyst identified her through a lifestyle-marker query flagging property purchases inconsistent with her declared salary; she was arrested in March 2025 carrying £164,000 in shrink-wrapped bricks across her two bags. A POCA confiscation order of £312,000 was imposed, with her Hounslow flat — purchased outright in 2023 for £410,000 — restrained pending forced sale, wiping out the home she had bought in full while her colleagues on the same rotations paid their mortgages one month at a time. Disclaimer: This video is a dramatization based on real events. Some visual content was created with artificial intelligence assistance. Some details have been fictionalized and all names have been changed to protect the privacy of those involved.