Top Penetration Testing Services & Companies in London

Top Penetration Testing Services in London

Penetration testing London providers delivering multi-scope engagements across web, mobile, cloud, API, network, and infra, mapped to CVSS v4.0, OWASP Top 10, and CWE/SANS Top 25 with compliance-ready reports and seamless CI-CD and workflow integrations.

Best penetration testing companies in London

Astra Security

Astra Security is a CREST-approved and PCI ASV-certified penetration testing company dedicated to securing websites and businesses online. Our comprehensive VAPT services cover a broad spectrum of digital assets, including websites, applications, cloud infrastructure, network devices, and emerging technologies like blockchain.

Pricing starts at:

$1,999/yr

Core Features

Sec-Ops

SEC-OPS™ offers CREST accredited penetration testing in London, specializing in identifying vulnerabilities in tech, people, and premises with TigerScheme certified experts. Services include web, wireless, and physical testing.

Pricing starts at:

Available on demand.

Core Features

Purple Lattice

Purple Lattice, offers tailored penetration testing services in london to identify and mitigate security threats, helping clients with GDPR compliance and risk management.

Pricing starts at:

Available on demand.

Core Features

Akita

Akita provides top-notch cybersecurity with specialized penetration testing to identify vulnerabilities. Their experts craft tailored plans for effective security enhancement, focusing on both external and internal assessments.

Pricing starts at:

Available on demand.

Core Features

CloudTech24

CloudTech24 is an IT & cybersecurity company that offers award-winning services like penetration testing using CREST-accredited methods. They identify cyber threats through ethical hacking to improve security posture and prevent data breaches.

Pricing starts at:

Available on demand.

Core Features

How to select the right Pentesting company

  1. Certified Security Experts
    Don't settle for self-proclaimed "hackers." Demand providers with OSCP, CEH, CREST, or eJPT certifications. Real credentials mean real expertise.

  2. Compliance Ready
    Choose a provider who delivers audit-ready reports that satisfy local frameworks without requiring translation or reformatting.

  3. Seamless CI/CD Pipeline Integration
    Look for providers offering seamless integrations with GitHub, GitLab, Jenkins, and Jira.

  4. Zero False Positives
    Pick providers who manually vet every finding before delivery.

  5. Publicly Verifiable Trust
    Look for publicly verifiable certifications, trust centers, and customer testimonials.

Frequently asked questions

What compliance standards matter for penetration testing in London?

In London, key compliance standards include GDPR/Data Protection Act 2018, PCI DSS for payment data, ISO 27001 for information security, and NIS Regulations for critical services. These frameworks often require or strongly recommend regular penetration testing.

How much does penetration testing cost in London?

The cost of penetration testing in London varies widely, typically ranging from £3,000 to £20,000 depending on scope, complexity, and business size.

How do I choose the best penetration testing company in London?

When choosing a penetration testing company in London, look for CREST or CHECK accreditations, proven experience in your industry, and transparent methodologies.

How long does a penetration test take for London-based businesses?

Penetration testing for London businesses can take anywhere from a few days to several weeks, depending on scope and complexity.

Can London penetration testing be done remotely, or is on-site required?

Most penetration testing for London companies can be performed remotely, especially for web applications, APIs, and external networks.