A former police officer has been identified by media reports as the person who lodged the complaint that prompted the arrest of comedy writer Graham Linehan at Heathrow last week, thrusting a long-running campaign of online complaints and legal challenges into the spotlight.

Daily Mail reporting and court documents name Lynsay Watson, a transgender former police constable previously dismissed for gross misconduct, as the operator behind a social media account known as "SEEN police OFFICIAL Open Public Network". The account has been used to publicise complaints against high-profile figures who have criticised gender identity policies and to call for police or prosecutorial action in multiple cases.

Linehan was arrested after arriving at Heathrow on an outstanding allegation that he incited violence in a series of posts in April, including a tweet that read, according to reporting, "If a trans-identified male is in a female-only space... punch him in the balls." Police said they had been notified about the posts; Linehan has described the arrest as disproportionate and has since left the UK for the United States, saying he intends to seek asylum as a "free speech refugee." The posts followed a UK Supreme Court ruling clarifying the application of single-sex spaces under the law.

Watson, who has previously served with the British Transport Police and later with Leicestershire Police, was dismissed in 2023 after an internal disciplinary process found she had sent more than 1,000 abusive messages to one campaigner, Harry Miller. A judge reviewing her challenge to that dismissal described the messages as "obsessive, abusive and defamatory" and dismissed her legal bid. Reporting says Watson represented herself in subsequent legal actions and has mounted multiple complaints and judicial challenges against police forces and other bodies when no action was taken.

Media accounts and the people named by the account say targets have included a mixture of public figures and former colleagues. Those listed in reporting include author J.K. Rowling, former Dragons' Den panellist Duncan Bannatyne, actor James Dreyfus, and former police officers such as Cathy Larkman and Alice Vinten. Some of those targeted say they were subject to non-crime hate incident (NCHI) investigations or had personal details shared online in a practice known as doxxing.

Several people named in reporting described the effects of the complaints. Helen Joyce, a writer and women’s rights campaigner, said she was investigated for a potential NCHI and for possible harassment after being reported, but said police never contacted her directly about the allegations. Alice Vinten, a former Metropolitan Police officer and author, said her email, home address and mobile number were posted online and that she received a threatening message after the details appeared.

Critics interviewed in coverage described Watson's pattern of behaviour as a three-step approach: sustained online harassment of a target, lodging official complaints that can trigger police or employer inquiries, and pursuing judicial or administrative challenges when authorities decline to act. Stuart Campbell, a blogger who has been pursued in legal actions stemming from comments about sex and gender, called Watson a "vexatious litigant" and said her use of the courts and police resources imposed cost and stress on targets.

Watson has also taken legal action against multiple institutions, according to reporting, including three police forces, the British Transport Police Federation, the Police Appeals Tribunal and the Ministry of Defence. Those legal actions were described as largely unsuccessful; the overall public cost of the challenges is not publicly known because Watson acted as her own representative in many cases.

The account associated with Watson moved to the Bluesky platform after being suspended from X (formerly Twitter), where it had opposed a group called Police Seen UK — a network of serving officers with gender-critical beliefs. A post attributed to the account in recent reporting said, "The USA is descending into full blown fascism. There has never been such a need for ethical assassination in US history," a statement that commentators contrasted with Linehan's more crude violent joke when assessing relative risk and intent.

Watson's personal history, as recounted in reporting, includes service in the Army from age 16, time with the British Transport Police, nursing training, and later roles with West Yorkshire Police and Leicestershire Police. Multiple disputes with employers and repeated legal challenges have accompanied her career. Reporting says her family still live in Berwickshire in the Scottish Borders and that they have had limited contact with her in recent years.

Those who have been reported by the account or named by Watson have provided varying accounts of police response. Some said they were investigated for non-crime hate incidents; others said authorities did not take action after complaints. Civil liberties and police-watch groups have previously raised concerns about the use and consequences of NCHI recordings, which do not amount to criminal convictions but can remain on a person's record.

The Linehan arrest has reopened debate about the boundaries of online speech, the role of social media in policing and whether official complaints from campaign accounts should trigger criminal or administrative proceedings. Legal experts and commentators have noted that arrests require reasonable grounds to suspect an offence and that subsequent charging decisions and court outcomes depend on broader judicial assessments.

Efforts to contact Watson for comment were not reported in the accounts reviewed. The activities of the account she is alleged to operate have prompted calls from targets and commentators for clearer rules governing vexatious complaints and for greater transparency from police forces about how they handle reports tied to online harassment.

The matter remains active as individuals affected by the account's complaints and those defending actions in the name of gender identity debate continue to seek legal and public remedies. Additional reporting on the wider implications for policing and free-speech protections is ongoing.