Enterprise AI engineering consultancy

Intelligence,
engineered for impact.

We design, build and operationalise secure AI systems—from enterprise RAG and agentic workflows to fine-tuned models, MoE architectures and world models.

Strategy → ProductionEnd-to-end delivery
Security by designGoverned AI systems
Model agnosticBuilt for your stack
What we believe

AI should create durable advantage—not another proof of concept.

Placidity Ltd helps ambitious organisations turn complex AI capability into dependable products, decisions and operations. We connect deep technical expertise with commercial outcomes, responsible governance and production discipline.

Our capabilities

Deep expertise.
One accountable partner.

Specialist support across the full modern AI stack—shaped around your most valuable use cases.

01

Enterprise RAG & GraphRAG

Production retrieval systems combining vector search, BM25, knowledge graphs, reranking, citations and rigorous evaluation.

Hybrid searchKnowledge graphsReranking
02

AI Agents & Automation

Reliable agentic workflows with tool use, structured memory, human approval gates, observability and multi-agent orchestration.

Agentic AITool useHuman-in-the-loop
03

Guardrails & AI Governance

Layered protection against prompt injection, data leakage and unsafe outputs, aligned to your security and compliance requirements.

Red teamingPII controlsEvaluation
04

Fine-tuning: LoRA & QLoRA

Domain adaptation with efficient fine-tuning, curated datasets, benchmark design, quantisation and deployment optimisation.

LoRA / QLoRAQuantisationModel evaluation
05

Transformers to MoE

Architecture strategy spanning dense Transformers, sparse Mixture-of-Experts, routing, inference efficiency and model selection.

TransformersMoE routingInference
06

World Models & Applied Research

Research-to-production support for multimodal systems, simulation, embodied AI, reinforcement learning and next-generation world models.

MultimodalSimulationRL
Architecture leadership

From model choice to enterprise platform.

We work across the entire AI lifecycle, making the hard trade-offs visible: quality, safety, latency, cost, control and scale.

Book an architecture review
06ExperienceCopilots · APIs · Workflow applications
05OrchestrationAgents · Tools · Memory · HITL
04IntelligenceRAG · GraphRAG · Fine-tuned models
03Model layerTransformers · MoE · Multimodal · World models
02Trust layerGuardrails · Evaluation · Observability
01FoundationData · Cloud · Security · MLOps
Featured accelerator

See retrieval quality,
not just the answer.

RAGScope makes the hidden mechanics of retrieval-augmented generation visible—helping teams inspect context, compare results and build confidence in AI outputs.

ragscope-sigma.vercel.app
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LIVE PRODUCT DEMO

Built to demonstrate transparent, inspectable and measurable RAG systems.

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How we work

Clarity at every stage.

A delivery model built to reduce uncertainty early, prove value quickly and leave your teams stronger.

01

Discover

Map the business case, data landscape, risk profile and measurable success criteria.

02

Architect

Design a secure, scalable system around your cloud, models and enterprise controls.

03

Deliver

Build in focused increments with evaluation, observability and stakeholder review.

04

Operate

Deploy, monitor and continuously improve quality, cost, latency and safety.

Responsible by design

Innovation without compromising control.

Every engagement embeds governance into architecture and delivery—not as an afterthought, but as an operating principle.

Security & privacyGroundedness & traceabilityHuman oversightContinuous evaluation
Start a conversation

Ready to make AI
work for your business?

Tell us where you are in your AI journey. We’ll help you define the clearest route from ambition to production.

info@placidity.org.uk