Why Choose B25 Private Investigations?
When you instruct a private investigator, you need to know that sensitive information will be handled carefully and that any evidence gathered will be obtained professionally.
B25’s team includes experienced investigators with backgrounds across policing, intelligence and the military. We work with private individuals, businesses and legal professionals throughout South London and the wider UK.
These things all set us apart from other detective agencies in South London – and the UK.

Top Rated Private Investigators Covering South London
B25 provides private investigation services across South London, including both inner and outer London boroughs.
We cover the London Borough of Lambeth, including areas such as Brixton, Streatham and parts of Clapham; and the London Borough of Southwark, including Southwark, Bermondsey, Peckham and Dulwich.
Our investigators also work throughout the London Borough of Lewisham, including Lewisham, Catford and Deptford, and the Royal Borough of Greenwich, including Greenwich, Woolwich and Eltham.
Further south, we cover the London Borough of Croydon, including Croydon, Purley and surrounding areas; the London Borough of Bromley, including Bromley, Beckenham and Orpington; and the London Borough of Bexley, including Bexleyheath, Sidcup and surrounding districts.
Across South West London, our coverage includes the London Borough of Wandsworth, including Battersea, Tooting, Balham and Putney; the London Borough of Merton, including Wimbledon and Mitcham; the London Borough of Sutton, including Sutton, Carshalton and Wallington; the Royal Borough of Kingston upon Thames, including Kingston and Surbiton; and the London Borough of Richmond upon Thames, including Richmond and Twickenham.
Our South London coverage therefore includes:
- Bexley
- Bromley
- Croydon
- Greenwich
- Kingston upon Thames
- Lambeth
- Lewisham
- Merton
- Richmond upon Thames
- Southwark
- Sutton
- Wandsworth
Private investigations rarely follow administrative boundaries. A surveillance subject may leave South London for Central London, travel across the capital or continue beyond the M25. We plan investigations around the movements of the subject and the requirements of the case rather than restricting work to one borough.
Private Investigation Across South London
South London’s transport network can make surveillance particularly challenging. A subject may travel between boroughs using trains, the Underground, buses, private vehicles or a combination of different transport methods during the same investigation.
Our surveillance team will consider the starting location, likely destinations and known travel patterns when planning an assignment.
For example, an investigation beginning in Croydon may continue into Central London, while someone leaving Wimbledon, Clapham, Greenwich or Bromley could move quickly between several different boroughs.
Where the circumstances indicate that more than one investigator may be necessary, we will explain why before the work begins.
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