New website for a cybersecurity firm in London: real cost vs local agencies (2026)

The verdict in three sentences

In London, a cybersecurity firm website costs, as a 2026 ballpark, 3,000 to 8,000 GBP with a freelancer, 12,000 to 35,000 GBP with a local agency and up to 100,000 GBP with a high-end B2B tech agency. Kolonell applies a fixed sterling grid: Starter 2,300 GBP, Growth 3,900 GBP, Premium 6,900 GBP, Premium being the multilingual tier for firms that also sell into continental Europe. The real budget depends mostly on technical copywriting, the security of the site itself and maintenance, all to be priced from the start.

What the website must prove to a CISO

A CISO or CIO looking for a penetration testing provider or an outsourced SOC visits three to five sites before booking a call. They look for verifiable proof, not slogans about threats. They often also check the site's security headers, certificate and third-party scripts: a badly configured cybersecurity website disqualifies the firm.

Pages to plan:

• One page per service: application and infrastructure penetration testing, SOC or MDR, incident response, Cyber Essentials support, ISO 27001, NIS2 or DORA readiness for European clients.
• Accreditations as actually held (CREST, ISO 27001, Cyber Essentials Plus), with scope and date.
• Team: roles, real individual certifications, publications and talks.
• A 24/7 incident hotline visible on every page, if it genuinely exists.
• Anonymised case studies approved by clients, with no invented incidents.
• Responsible disclosure, a security.txt file, privacy and cookie policies aligned with UK GDPR and PECR.

What does this website cost in London?

Market ranges are a 2026 ballpark, based on typical London agency quotes and public agency rate pages.

Every Kolonell tier includes a project manager reachable in your time zone, native English or French copywriting, delivery in 3 to 4 weeks (4 to 6 for Premium) and 3 months of support. A client portal, integration with a CRM or your ticketing tool, and any custom application are on quote. Details are on the international websites offer.

Hidden costs and the three-year total

At Kolonell, maintenance after the 3 included months is priced on quote. Accessibility matters too: the Equality Act 2010 requires that disabled users are not disadvantaged, and WCAG 2.2 AA serves as the practical benchmark. If the firm promotes a financial product, the FCA's financial promotion rules may apply, which is rare in this sector. This is not legal advice.

When a London agency is the better choice

An agency in the City or Shoreditch keeps the edge if you are preparing a funding round with a full brand repositioning, if you want in-person workshops with your leadership, or if you run trade shows such as Infosecurity Europe, ABM campaigns and videos produced locally. Some public sector contracts also require suppliers with specific clearances. For a firm of 10 to 80 people that wants a sober, fast site that is credible to a CISO and live within a month, a remote team with a fixed grid is a serious option.

Questions to ask:

• Who writes the service pages, and have they written about penetration testing or SOC before?
• Which security headers and which third-party script policy are delivered?
• Does the site score properly on public header testing tools?
• Is the post-launch maintenance price written into the contract?
• Who holds the access, the code and the domain name at the end of the contract?

Mini case study

Illustrative example: Thameside Cyber, 35 people, compares a local agency at 22,000 GBP with Kolonell's Growth tier at 3,900 GBP.

• Local agency: 22,000 GBP, plus 400 GBP per month maintenance for 33 months, or 13,200 GBP. Three-year total: 35,200 GBP.
• Kolonell Growth: 3,900 GBP, plus 1,500 GBP photography and 2,000 GBP independent security test (third parties), plus assumed maintenance of 250 GBP per month for 33 months (market assumption, real figure on quote), or 8,250 GBP. Total: 15,650 GBP.

The gap is 19,550 GBP over three years, which the firm can redirect to writing case studies or to SEO.

FAQ

How much does a cybersecurity firm website cost in London in 2026?

As a ballpark, from 3,000 GBP with a freelancer to 100,000 GBP with a high-end B2B tech agency. At Kolonell, the grid runs from 2,300 GBP (Starter) to 6,900 GBP (Premium).

Which tier should we choose?

Growth, at 3,900 GBP, generally suits a firm with several services and case studies. Premium, at 6,900 GBP, is the multilingual tier, useful if you sell in France, Germany or the Netherlands, with languages set in the quote.

Can we display our CREST or ISO 27001 accreditations?

Yes, if they are genuinely held, with their scope and validity date. Showing a logo that was never obtained or has expired risks removal by the scheme and an immediate loss of trust.

Will the site be security tested?

The site is delivered with a careful security configuration, and an independent test is still recommended: 1,500 to 4,000 GBP as a ballpark. Many firms have their own team run it.

What happens after the 3 months of support?

Maintenance is priced on quote according to update frequency. On the London market, contracts run around 200 to 800 GBP per month, an assumption to compare.

Let's scope your project. A cybersecurity site with service pages, accreditations and case studies usually fits the Growth tier, delivered in 3 to 4 weeks. See the international offer or request a free quote: detailed reply within 48 hours.