Bespoke Enterprise AI · Mayfair, London

EngineeredIntelligence.

Additon Limited commissions private AI environments, data fabrics and operational intelligence platforms for the world's most discerning enterprises — engineered end-to-end from our London foundry.

Request a Briefing See the Platform

ISO 27001 AlignedSOC 2 · Type IIUK GDPR · DPA 201899.9% SLA

Manifesto

I · Manifesto

We do not ship templates.We commission systems —engineered with the rigour ofa Savile Row atelier and thethroughput of a hyperscaler.

Every Additon engagement begins with a private briefing. We assemble a cross-disciplinary cell — applied research, platform engineering, security and design — and treat your operating environment as a single coherent product to be authored, not assembled.

II · The Platform

One coherent stack.
Five disciplined layers.

The Additon platform is built top-to-bottom in-house. Each layer is independently auditable and individually replaceable — yet authored as a single, opinionated whole.

Layer 05

Experience

Bespoke operator interfaces, copilots and decision surfaces engineered for your domain.

Layer 04

Applications

Vertical AI applications: forecasting, underwriting, fraud, ops, knowledge.

Layer 03

AI Core

Sovereign model gateway, retrieval, evaluation, guardrails, observability.

Layer 02

Integration

Event mesh, API fabric, ETL/ELT, SAP/Oracle/Salesforce/Snowflake connectors.

Layer 01

Data Foundation

Lakehouse, vector indices, lineage, governance, cataloguing — your perimeter.

III · Intelligence Engine

A reasoning fabric.
Tuned to your domain.

Multi-model routing, retrieval, evaluation and guardrails operate as a single fabric. Every inference is observable, costed and reversible — so generative systems can be deployed with the same governance as core banking infrastructure.

Inference Mesh · live

Latency 42msThroughput 1.84 TB/sDrift 0.002%

IV · Operating Surface

A live control plane —
not a brochure.

additon · operations · prod-eu-west-1

SLA · 30d

99.97%

P95 latency

42ms

ROI

4.2×

Cost / req

£0.0008

Inference / sec+18.4%

Faithfulness0.97

Gateway

Retrieval

Guardrail

Index

Event stream● live

›[orchestrator] cell-eu-w-1 ✓ healthy

›[gateway] route gpt-oss:128k → tier-A 42ms

›[guardrail] PII redaction passed (0 hits)

›[eval] groundedness 0.94 · faithfulness 0.97

›[index] vector upsert 2,184 docs in 612ms

V · Capabilities

The full enterprise toolkit,
authored as one.

Sovereign Model Gateway

Route between proprietary, open-weight and frontier models with policy-based fallback.

Vector Retrieval

Hybrid BM25 + dense, lineage-tracked, sub-50ms.

Evaluation Suite

Groundedness, faithfulness, safety, drift — gated in CI.

Guardrails

PII, IP, jailbreak and toxicity controls per surface.

Observability

Per-token cost, latency, prompt diff and replay.

Data Mesh

Lakehouse, CDC, contracts and quality SLOs.

Operator UX

Bespoke copilots authored for your operators.

Compliance

ISO 27001, SOC 2, UK GDPR, EU AI Act ready.

VI · The Practice

Outcomes, measured —
not promised.

0.00%

SLA · 30 day rolling

0.0×

Median ROI · 12 months

Run-cost reduction

0ms

P95 inference latency

VII · Briefing

Commission a
private briefing.

Speak with a partner at Additon. We respond to every qualified enquiry within one working day.

Email: care@additon.co.uk
Telephone: +44 7474 745 689
Registered office: ADDITON LIMITED
20 Wenlock Road
London, N1 7GU
United Kingdom
Companies House: No. 17165172