A 21-year-old woman told police she did not recognise that she had been the victim of a criminal offence until officers arrested her partner in March 2023 on suspicion of controlling and coercive behaviour, underscoring how intimate-partner abuse can be subtle, cumulative and difficult for survivors to name.
Police intervention came after family concerns
The woman, identified in reporting as Shannon Byrne, was in the back of a police vehicle when an officer used the domestic abuse, stalking and honour-based violence risk checklist (DASH) to assess her safety. According to Byrne’s account, the officer’s conclusion led to the arrest of her then partner, Declan Walsh, 23, at his home in Stockport, Greater Manchester.
“I'm going to arrest him,” the officer told me, and I went “why?” ... She said “it's domestic violence, it's controlling and coercive behaviour.”
Byrne said she had understood the general concept of domestic violence but had not been familiar with the specific criminal category of controlling and coercive behaviour until that moment. The arrest was in March 2023, when Walsh was detained on suspicion of that offence.
From flattering attention to total control
Byrne and Walsh met when she was 17 and working part-time at a Costa Coffee; she balanced shifts with college. Early attention from Walsh felt flattering, she said, but his conduct intensified over time. What began as frequent visits to the coffee shop evolved into restrictions on what she wore, what she ate and with whom she spoke.
She described a key turning point when she was prevented from visiting family: in particular, Walsh would not allow her to go to her nephew’s birthday — a relationship she described as deeply important. Byrne said the relationship had become “controlling” to the point it curtailed the basic freedoms of her daily life.
Public presentation, private harm
People in Byrne’s life had noticed Walsh’s behaviour early on. Colleagues and acquaintances nicknamed him her “Costa stalker,” a label he later used when he introduced himself to Byrne’s father, according to Byrne’s recollection. The nickname indicated that, even before formal intervention, those around the couple had perceived his conduct as intrusive.
After the police intervention, Byrne has described greater clarity about the nature of her experience. She later spoke about the relief of being able to confront her ordeal and even to embrace her father following the events that led to Walsh’s custody.
- Victim: Shannon Byrne, 21
- Suspect: Declan Walsh, 23
- Arrest location: Home in Stockport, Greater Manchester
- Date: March 2023 (arrest on suspicion of controlling and coercive behaviour)
| Detail | Information |
|---|---|
| Alleged offence | Controlling and coercive behaviour |
| Police tool used | DASH (domestic abuse, stalking and honour-based violence checklist) |
| Immediate trigger for arrest | Risk assessment conducted during welfare check prompted arrest |
Implications for victims and policing
The case illustrates two patterns that have emerged in contemporary responses to intimate-partner abuse. First, coercive control often manifests as a series of small restrictions and intrusions rather than a single violent incident, leaving some victims unaware that the behaviour is criminal. Second, structured risk-assessment tools such as DASH can be decisive in prompting arrest and safeguarding steps when family or friends raise concerns.
While the account is specific to Byrne and the events in Stockport, it echoes wider discussions among victim advocates and criminal-justice professionals about the need to recognise and prosecute patterns of psychological and behavioural control. The use of DASH during welfare checks is intended to give officers a framework to identify risks that may not be evident from a surface-level interaction.
Byrne’s narrative also highlights the role of social networks in spotting problematic behaviour — colleagues and family members noticed warning signs that the woman herself did not initially interpret as criminal. Her experience underlines the challenge of converting concern into formal reporting and intervention, and the potential for police risk assessment to change the course of a relationship that has become abusive.
Further details regarding any subsequent charges, court proceedings or sentencing were not provided in the material reviewed.
