M3CA / Mayfair AI practice
AI consultancy in London, from first decision to working system
M3CA helps organisations choose where AI is worth using, connect it safely to company data, prove quality on real tasks and train the people responsible for the result. Strategy and engineering stay with one senior team.
Visit M3CA in Mayfair
London AI consultancy, by appointment.
Meet the team to review one workflow, the data it needs and the outcome you want. Workshops can also run remotely or at your premises by agreement.
Arrange a consultationinfo@m3ca.comAddress and opening hours
35 Berkeley SquareBerkeley Suite, MayfairLondon W1J 5BFUnited KingdomMonday to Friday, 9am to 6pm. Visits by appointment. London local time.
+44 20 3978 6347Get directionsUse the exact address above for your journey. Confirm your appointment and arrival arrangements before travelling.
Client references and reviews
Evidence before commitment.
Explore our published case studies and external profile when assessing the team. Client identities in confidential AI engagements remain withheld until permission is given.
Explore client workRead published client feedbackView M3CA on ClutchStart with the decision
No model recommendation before the work is understood.
The first question is not which model to buy. It is which task matters, what a good result looks like, what evidence the system can use and who remains accountable when it is wrong.
Mayfair workshops
Work in person with the senior people shaping the architecture, governance and delivery plan.
UK-wide delivery
Remote, on-site and hybrid programmes for organisations across the UK, with scope and dates agreed around the team.
What you can commission
01
Opportunity and readiness
Map the decisions, delays and repeated work where AI may help. Rank each opportunity against business value, data readiness, risk and the cost of human review.
02
Company knowledge and retrieval
Connect approved policies, project records and operational knowledge to assistants that cite their sources and respect the permissions of the person asking.
03
Agents and workflow integration
Place AI inside the CRM, website, application or internal process where the work happens. Actions stay bounded by permissions, approval steps and clear stop conditions.
04
Model selection and evaluation
Compare leading and open models on representative company tasks. Score quality, evidence, latency, review effort and running cost before choosing a provider.
05
Private and sovereign AI
Use private deployment where public services do not fit the requirement. M3CA Sovereign AI offers a UK environment isolated from the public internet.
06
Training and adoption
Give leaders, operational teams and technical staff practical workflows, responsible-use rules and a way to test quality after the workshops end.
Consulting that ships
A recommendation only matters if it survives contact with the operation.
Explore model engineering- 01
Diagnose
A senior consultant works through the business task, baseline, data, users and failure cost. The output is a ranked opportunity map, not a generic transformation deck.
- 02
Prove
We build the narrowest useful pilot with representative examples, a held-out test set and explicit acceptance criteria. A polished demonstration is not treated as proof.
- 03
Integrate
The accepted workflow is connected to the systems, permissions and handovers around it. Monitoring, model usage and human escalation are designed before rollout.
- 04
Enable
Your team receives operating guidance, practical training and named ownership. We can stay to optimise the system, but the knowledge and access do not stay locked with us.
Relevant proof
Client work, with names protected until permission is written.
Read how a UK law firm, manufacturer and care group approached training, company knowledge and specialist model engineering.
Read the case studiesCompany data training
Prepare permissions, representative examples, evaluation and deletion rules before choosing retrieval, fine-tuning or a private model.
Read the guidePrivate UK infrastructure
For workloads that should not sit on the public internet, M3CA Sovereign AI provides a live UK private-compute route.
Explore Sovereign AIBefore the first workshop
Questions worth answering early.
Should we buy a tool or build something?
We test the requirement against established products first. Custom work is justified when your workflow, permissions, data or product experience creates a real gap.
Can you work with our current AI provider?
Yes. M3CA is model-agnostic and can integrate OpenAI and ChatGPT, Anthropic and Claude, Google Gemini, xAI and Grok, Lovable, or suitable open models.
How do you use confidential company data?
Only through an agreed design covering classification, provider terms, retention, access and hosting. Restricted material does not enter an unapproved account.
What do we receive before a wider rollout?
A working pilot, representative tests, recorded failure modes, acceptance results, an operating guide and a clear recommendation to proceed, narrow the scope or stop.
Book a London consultation
Bring one workflow and the result it needs to produce.
Request a Mayfair appointment, remote consultation or team workshop. We agree the scope and date with you personally.
Email info@m3ca.comBook a 20-minute fit callCompany AI in practice
