Speedboat Killer Imprisoned Again Two Years After Release for Attacking Girlfriend With Barbecue Tongs

Jack Shepherd, infamously known as the 'speedboat killer', has been sentenced to 20 months in prison after attacking his girlfriend in two separate incidents.

Shepherd was released on licence in January 2024 after serving part of a 10-year sentence imposed for the manslaughter of Charlotte Brown during a speedboating incident in 2015, as well as a separate assault.

He was subsequently recalled to custody in September 2025 after breaching his licence conditions and has now been jailed again. He will also serve four years on extended licence following his latest sentence.

Shepherd, 39, pleaded guilty to two counts of assault occasioning actual bodily harm and one count of criminal damage at Isleworth Crown Court in west London in July. He was sentenced to 20 months in prison at the same court on Monday, 14 September.

His assaults on his unidentified girlfriend took place in February and June 2025. The second incident involved Shepherd striking his partner with barbecue tongs after becoming angry. The attack left the woman with a permanent scar.

Shepherd's Crimes

The court heard that Shepherd met the woman after his release from prison following Brown's death. Shepherd and the unidentified woman, who is in her fifties, began a relationship in August 2024.

According to the prosecution, the first incident occurred in February 2025, when Shepherd pinned the woman down and punched her multiple times. The attack reportedly left bruises on the victim's arm and upper leg.

Roughly four months later, in June, Shepherd became angry when the woman burnt a pizza, leading him to strike her on the left breast with barbecue tongs, leaving a permanent scar. Shepherd also admitted damaging the woman's property during a separate incident involving her car keys.

The Speedboat Incident

Shepherd's latest conviction follows his earlier imprisonment over the death of 24-year-old Brown.

In December 2015, Shepherd took Brown on a date that included dinner at London's Shard before the pair went out on his speedboat on the River Thames.

The speedboat struck a submerged object near Wandsworth Bridge and overturned, throwing both into the Thames. Brown was later recovered unconscious and died in hospital.

Shepherd subsequently fled to Georgia and was convicted in his absence of manslaughter by gross negligence. After being extradited to Britain in 2019, he was sentenced to six years for manslaughter, with a further four-year sentence imposed for a separate assault. The sentences ran concurrently.

Recalled to Prison After New Offences

Shepherd was released in January 2024 but was recalled to prison in September 2025 after his licence was revoked. He had been arrested in August 2025 following allegations of controlling, coercive and violent behaviour.

At Isleworth Crown Court, Judge Martin Edmunds sentenced Shepherd to 20 months in prison. The court was told that his existing sentence means he is expected to remain in custody until January 2029, although the latest sentence does not extend that release date.

Shepherd's lawyer, George Payne, said his client was ashamed of his actions and argued that his behaviour was linked to longstanding alcohol abuse.

However, Judge Edmunds rejected the explanation, stating: 'Your pattern is to commit offences and afterwards apologise, and produce excuses. Your prepared statement sought to shift blame anywhere but yourself.'