Identity is your perimeter -
Make it your first line of defence

UK-Based Identity & Access Management Advisory.
For organisations where security isn't optional.

Senior‑led IAM advisory for complex risk, delivery, and assurance challenges.

We help mid‑market and regulated organisations regain control of identity risk —
under attack, under audit, or under delivery pressure.

We work with mid-market organisations — typically 250 to 5,000 employees — that need serious identity and access management expertise without the overhead of a large consulting firm.
Every engagement is led personally by a senior practitioner with 25 years of IT experience, a decade of IAM specialism, and hard-won credentials that include defending against a live APT nation-state intrusion.
No juniors, no sub-contractors, no vendor allegiances.

IAM-only focus

We don't do general IT security. Identity and access management is our entire practice — which means you get deeper expertise, faster diagnosis, and better outcomes.

Senior-led, always

The person you meet is the person who does the work. No handoffs to junior staff after the sales process.

Vendor-independent

We do not lean towards reseller agreements, referral arrangements, or technology allegiances. Our recommendations are driven by your requirements, nothing else.

What “Senior‑Led” Means at Arcalis

Senior‑led means that the same practitioner who scopes your engagement also makes the critical architectural, risk, and governance decisions - and remains directly accountable for them throughout.

There are no delivery hand‑offs, junior teams, or diluted decision chains. Judgement is applied where it matters most: when trade‑offs must be made between security, complexity, cost, regulatory exposure, and operational reality.

This model is deliberate. In IAM, the difference between a defensible control and a latent risk is rarely documentation - it is experience exercised in context.

Tested in conditions most practitioners will never face

In 2021, our lead practitioner personally led the defence and full remediation of an active APT29 (Cozy Bear) intrusion against a multinational technology company — one of the most sophisticated threat actors in the world, attributable to Russian state intelligence.

That experience isn't a line on a CV. It informs every risk conversation, every architecture recommendation, and every control we help organisations put in place.

What We Do