Can You Hire a Private Investigator to Check on Your Child’s Welfare in the UK?

If you are worried about your child’s welfare, it can be difficult to know what to do next. You may feel that something has changed, but you may not have clear proof. Your child might be spending time with people you do not trust, going missing for periods of time, becoming secretive, receiving unexplained money or gifts, or putting themselves in situations that feel unsafe.

In some cases, parents consider hiring a private investigator to understand what is really happening. The question is: can you legally hire a private investigator to check on your child’s welfare in the UK?

The answer is yes, in certain circumstances. A private investigator can carry out lawful, proportionate and discreet enquiries where there is a genuine welfare concern. However, there are strict limits. A private investigator cannot break privacy laws, trespass, hack accounts, impersonate officials, unlawfully access records or act in a way that amounts to harassment.

This guide explains what a private investigator can and cannot legally do, when surveillance may be appropriate, and when parents should contact the police, children’s social care or safeguarding professionals instead.

Last reviewed: June 2026. This article is for general information only and should not be treated as legal advice. View references.

Why parents may consider a private investigator

Parents usually contact us when they feel something is wrong but cannot get a clear picture. That concern may relate to a younger teenager, an older teenager, or an adult child who is still vulnerable in some way.

Common concerns include a child associating with risky peer groups, suspected gang involvement, unexplained absences, possible drug use, unsafe relationships, coercive behaviour, or a child being drawn into criminal exploitation. UK Government guidance recognises that child criminal exploitation can involve coercion, control, manipulation or deception, and that a child may be exploited even if the activity appears consensual.^[7]

County lines is one example. The NSPCC explains that county lines involves gangs using children and vulnerable adults to move, hold or sell drugs across the UK, and that it can affect children from any background.^[8] Not every worrying situation is county lines, but parents are often right to take unexplained changes seriously.

A private investigator’s role is not to replace the police, social services or safeguarding teams. Our role is to gather factual information lawfully where it is appropriate to do so. That information can help a parent understand whether their concern is based on evidence, whether further action is needed, and whether a safeguarding referral should be made.

Is it legal to hire a private investigator to check on your child?

It can be legal, but the circumstances matter. A parent does not have unlimited rights to monitor a child simply because they are the parent. Children also have privacy rights, and those rights become especially important when personal data, photographs, video or surveillance notes are being collected.

The Information Commissioner’s Office explains that organisations must have a lawful basis for handling personal information. Legitimate interests can be one lawful basis, but it requires a purpose test, a necessity test and a balancing test. This means the reason for collecting the information, the need to collect it, and the child’s rights and freedoms all have to be considered.^[1]

The ICO has also highlighted the importance of data protection compliance in the private investigations sector, including the need to identify and document the correct lawful basis for invisible processing such as covert surveillance, background checks and social media monitoring.^[2]

For child welfare cases, this means any investigation must be carefully scoped. The purpose should be welfare-led, not curiosity-led. The work should be limited to what is necessary, proportionate and lawful. It should also be handled confidentially, with care over how any information, photographs or reports are stored, used and shared.

What can a private investigator legally do?

• Public-place surveillance: observing a person in places where they can lawfully be seen, such as streets, transport hubs, public venues or external areas visible from public land.
• Factual reporting: recording what was seen, when it happened, where it happened and who was present, without speculation or exaggeration.
• Photographic evidence: obtaining images where lawful, necessary and proportionate to the purpose of the investigation.
• Timeline building: creating a clear chronology of movements, meetings and events.
• Risk-focused evidence gathering: identifying whether the concern appears to be supported by observable facts.
• Confidential reporting: providing a full report with photos, findings and a detailed timeline.

Where legally appropriate, SPS Investigations can carry out discreet private surveillance for child welfare purposes. This is usually focused on public places, factual observation and careful reporting. We do not confront the child, confront the people they are with, or create risk by escalating a situation.

Our surveillance work is designed to be calm, discreet and lawful. We are based in London and provide private investigation services to people across London and the Home Counties. When parents contact us, we first look at the concern, the objective, the age and vulnerability of the child, the legal basis for the work, and whether a safeguarding body should be contacted instead.

What a private investigator cannot legally do

A responsible private investigator should be clear about what they cannot do. Any company promising “guaranteed access”, “phone tracking”, “social media hacking” or “private records” should be treated with caution.

• We cannot trespass onto private property, enter homes, schools, workplaces or private premises without permission.
• We cannot hack phones, emails, social media accounts, messaging apps or cloud storage.
• We cannot impersonate police officers, social workers, teachers, medical professionals or government officials.
• We cannot unlawfully obtain records such as medical records, school records, bank records or phone records.
• We cannot install tracking devices without a lawful basis and proper authority.
• We cannot harass or intimidate the child or the people around them.

This is especially important in child welfare cases. The aim should be to reduce risk, not create more of it. Surveillance that is excessive, unnecessary or intrusive can create legal and safeguarding problems. The Protection from Harassment Act 1997 and related guidance make clear that repeated unwanted conduct can cross into harassment or stalking depending on the circumstances.^[10]

Public-place surveillance and privacy considerations

Public-place surveillance is often misunderstood. Being in a public place does not mean a person has no privacy rights at all. It simply means that some forms of observation may be lawful if they are necessary, proportionate and carried out responsibly.

For example, it may be reasonable to observe whether a child is meeting a particular person after school, going to an address associated with risk, entering a licensed venue, travelling to an unexpected area, or associating with people who appear to be placing them in danger. It would not be reasonable to carry out open-ended monitoring simply to control a child’s social life or punish behaviour a parent dislikes.

The ICO’s video surveillance guidance covers the handling of personal information through CCTV, body worn video, drones, dashcams and other surveillance technologies.^[3] In practice, this means evidence gathered through surveillance must be treated as personal data where individuals can be identified. It should be collected for a clear reason, stored securely, kept only for as long as needed, and shared only where appropriate.

Children’s personal information also deserves special care. ICO guidance on children and the UK GDPR explains that organisations handling children’s information need to consider child-specific issues, including the child’s best interests and appropriate lawful bases for using personal information.^[4]

When a private investigator may be appropriate

A private investigator may be appropriate where there is a genuine welfare concern, but no immediate emergency. For example, a parent may suspect that their child is being picked up by unknown adults, visiting a risky location, meeting someone they have met online, or becoming involved with a group that appears to be exploiting them.

In those situations, factual observation can sometimes help separate fear from fact. The findings may show that there is no clear evidence of danger, or they may show that the concern is justified and needs to be escalated.

At SPS Investigations, we specialise in discreet and confidential private surveillance. We have helped individuals and businesses uncover the truth over recent years, and our work is always approached with compliance, confidentiality and proportionality in mind.

For child welfare enquiries, we will not simply accept an instruction without understanding the reason behind it. We need to know what the concern is, what outcome the parent is seeking, what information they already have, and whether the situation should be referred to safeguarding professionals immediately.

When you should contact police, social services or safeguarding teams instead

A private investigator is not the right first step where a child may be in immediate danger. If there is a real risk of harm, violence, abduction, sexual exploitation, weapons, serious threats, abuse or neglect, you should contact the appropriate emergency or safeguarding service.

• Call 999 if the child is at immediate risk or in immediate danger.
• Call 101 or report online if it is a non-emergency crime concern.
• Contact children’s social care through the local council if you are worried a child is at risk or being abused.
• Contact the NSPCC helpline if you need advice about a safeguarding concern.

GOV.UK states that you do not need to be sure a child has been abused before reporting a suspicion, and that you should call 999 if a child is at immediate risk.^[5] The Department for Education’s Working Together to Safeguard Children 2026 guidance sets out the multi-agency approach used to help, support and protect children in England.^[6]

If you are unsure whether the matter is a private investigation issue or a safeguarding issue, it is better to treat immediate safety as the priority. A private investigator can help with lawful fact-finding, but we cannot replace emergency services, social workers, schools, safeguarding leads or the police.

What happens if you instruct SPS Investigations?

If you contact us about a child welfare concern, we will first listen carefully and ask practical questions. We need to understand the background, the child’s age, the nature of the concern, any immediate risks, and what you are hoping to establish.

If the matter appears suitable for lawful surveillance, we will explain what can and cannot be done. We will set a clear objective, agree the scope of the work and keep the investigation proportionate. The focus is not to spy for the sake of it. The focus is to gather factual information that may help you make a safer, better-informed decision.

People who use our surveillance service receive a full report, with photos and reports of the findings, along with a detailed timeline. This can help parents understand where their child went, who they met, what was observed and whether the concern appears to require further action.

Where the findings suggest a serious safeguarding concern, we may advise you to contact the police, children’s social care, a school safeguarding lead or another appropriate authority. The information gathered may help you explain your concern more clearly, but it should be used responsibly and only where appropriate.

What if your child is over 18?

If your child is over 18, the legal position can be different. An adult child has their own privacy rights, even if you are worried about them. That does not mean no investigation is ever possible, but the justification needs to be especially clear.

For example, there may be a welfare concern involving coercion, exploitation, addiction, unsafe associates or vulnerability. However, a parent’s anxiety alone is not enough to justify intrusive monitoring of an adult. Any work would need to be carefully assessed for necessity, proportionality, privacy and data protection compliance.

In some adult welfare cases, the better route may be a police welfare concern report, adult safeguarding referral, family support service or legal advice. We can discuss the situation with you and explain whether private investigation is appropriate.

Why compliance matters in child welfare investigations

A poorly handled investigation can make a difficult situation worse. It can damage trust, alert risky individuals, compromise evidence, create confrontation, or lead to unlawful data gathering. That is why compliance is not a box-ticking exercise. It is central to the safety and usefulness of the work.

At SPS Investigations, we approach child welfare surveillance with discretion, care and legal awareness. We do not encourage parents to take unsafe action themselves, confront suspected exploiters or attempt to access private accounts. We also do not carry out work that is intrusive, speculative or disproportionate.

When the circumstances are suitable, lawful surveillance can provide clarity. When the circumstances are urgent, dangerous or clearly safeguarding-related, the correct route is to contact the police, children’s social care or another safeguarding body.

Speak to SPS Investigations

If you are worried about your child’s welfare and want to understand whether private surveillance is legally appropriate, we can talk through the situation confidentially.

We are based in London and provide private investigation services to people across London and the Home Counties. Our surveillance services are discreet, professional and compliance-focused.

Contact SPS Investigations to discuss your concern in confidence.

FAQs

Can a private investigator follow my child in the UK?

A private investigator may be able to carry out public-place surveillance where there is a genuine welfare concern and the work is lawful, necessary and proportionate. The investigator cannot trespass, harass, intimidate, hack accounts or use unlawful methods.

Is it legal for a parent to hire a private investigator for child welfare concerns?

It can be legal in appropriate circumstances, especially where the concern is welfare-led. However, the work must respect privacy, data protection law and safeguarding considerations. A responsible investigator should assess whether the matter is suitable before accepting the instruction.

Can a private investigator check if my child is involved with gangs?

A private investigator can sometimes gather factual information through lawful surveillance, such as where a child is going and who they are meeting in public places. If you believe your child is being criminally exploited, threatened, groomed or placed in immediate danger, you should contact the police or children’s social care.

Can a private investigator access my child’s phone or social media accounts?

No. A private investigator cannot hack phones, emails, messaging apps, cloud accounts or social media profiles. Any online enquiries must be lawful and compliant with data protection requirements.

Will I receive evidence after surveillance?

Yes. If SPS Investigations carries out surveillance, you receive a full report with photos where lawfully obtained, reports of the findings and a detailed timeline. The report is factual and designed to help you understand what was observed.

Should I call the police instead of hiring a private investigator?

If your child is in immediate danger, call 999. If you believe a crime has been committed but it is not an emergency, call 101 or report it online. If you are worried that a child is at risk of abuse, neglect or exploitation, contact the local authority children’s social care team.

Can SPS Investigations help if my child is over 18?

Possibly, but adult children have their own privacy rights. Any investigation involving an adult must have a clear, lawful and proportionate purpose. We can discuss the circumstances and explain whether private investigation is appropriate.