Table of Contents
FCA-regulated UK financial services firms have stringent requirements for AI: data residency, audit logging, single-tenant isolation, model explainability. Self-hosted on UK dedicated GPU is the cleanest path through the FCA outsourcing rules + SYSC 8 requirements + UK GDPR.
Stack: Llama 3.1 8B FP8 (or Mistral Small 3 24B for premium) on UK 4090 / 5090 + BGE-large + reranker + Qdrant for KB / policy corpus. Audit logging + structured outputs + PCI-DSS-compliant scope where payment data flows. Add Claude fallback for complex compliance review. £500-3K/mo SMB-to-mid financial AI infrastructure.
Workloads
- Fraud / AML monitoring: classification + alert generation on transaction streams
- Customer support: chatbot grounded in policy / product KB
- Compliance review: regulation applicability checking for new products / processes
- KYC review assistance: document verification + summary generation
- Regulatory reporting: structured extraction from internal docs
Compliance
Three FCA / UK-specific regulatory frameworks that benefit from self-hosted:
- FCA SYSC 8 (outsourcing): single-tenant infrastructure simplifies oversight requirements
- PCI-DSS: if payment card data flows, single-tenant materially simpler scope
- UK GDPR + Schrems II: avoiding US data transfers eliminates SCC paperwork
- UK FOS / financial ombudsman: audit trail for AI-assisted customer interactions critical
Hardware
- SMB challenger bank / fintech: 5060 Ti or 4090, ~£119-279/mo
- Mid-tier wealth manager / asset firm: 4090 + 5090, ~£640/mo
- Larger bank / insurer: multi-GPU + 6000 Pro for premium tiers, ~£3-10K/mo
- Pair with Claude / GPT-4o fallback for hardest 5-10% of cases
Verdict
For FCA-regulated firms in UK, self-hosted on UK dedicated GPU is materially better fit than hosted-API alternatives. Compliance scope reduction + cost economics + data residency all align. Hybrid (self-hosted + frontier API for hardest cases) is the production pattern.
Bottom line
UK self-hosted = FCA-compliant financial AI. See PCI-DSS.
