# UK financial services regulation overview

> **Key takeaway:** FSMA s.19 general prohibition. RAO defines regulated activities. s.21 promotions. FCA/PRA rules + SM&CR. Enforcement and FOS. Check FSMA 2023 reforms in force. Specialist area.

- **Jurisdiction:** England & Wales
- **Practice area:** Commercial
- **Last reviewed:** 2026-08-04
- **Interactive page:** https://kttclegal.info/library/notes/Commercial/financial-services-regulation-overview
- **Keywords:** FSMA, FCA, PRA, regulated activities, financial promotion, SMCR, general prohibition, financial services

## What is this about?

UK financial services businesses are regulated primarily under FSMA 2000 by the FCA and, for prudential regulation of major firms, the PRA. The general prohibition, regulated activities, financial promotions, and senior managers regimes structure compliance and enforcement risk.

## What is the core rule?

It is an offence to carry on regulated activities in the UK without authorisation or exemption (FSMA s.19 general prohibition). The Regulated Activities Order defines the perimeter. Financial promotions are restricted (s.21). Authorised persons must comply with Principles for Businesses, detailed Handbook rules, and (where applicable) SM&CR accountability. Enforcement includes fines, prohibitions, restitution, and criminal offences for serious misconduct. Consumers may access FOS within jurisdiction limits.

## What are the elements or test?

1. Is the activity a regulated activity by way of business in the UK?
2. Authorisation/exemption/exclusion available?
3. Financial promotion sign-off needed?
4. Which dual-regulated vs solo-regulated status?
5. SM&CR responsibilities and conduct rules?

## Which authorities matter?

- **Financial Services and Markets Act 2000 (as amended)** — Primary regulatory statute including general prohibition and promotions.
- **Financial Services and Markets Act 2000 (Regulated Activities) Order 2001 (as amended)** — Perimeter of regulated activities.
- **FCA Handbook / PRA Rulebook** — Detailed binding rules and guidance for authorised firms.
- **Financial Services and Markets Act 2023 (reforms — check commenced provisions)** — Major reform statute adjusting the post-Brexit regulatory framework.

## How does this apply in practice?

Perimeter advice is high-risk — get specialist FS regulatory input. Crypto, payments, and consumer credit have specialised overlays. Not an authorisation application guide.

## What are common pitfalls?

- Assuming overseas website activity is outside the perimeter
- Unapproved financial promotions
- SM&CR documentation gaps
- Treating FOS outcomes as irrelevant to legal risk

## When would a practitioner use this?

Commercial deals involving financial products; perimeter triage; enforcement response framing.

## Quick reference

FSMA s.19 general prohibition. RAO defines regulated activities. s.21 promotions. FCA/PRA rules + SM&CR. Enforcement and FOS. Check FSMA 2023 reforms in force. Specialist area.

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*Reference material from [KTTC Legal](https://kttclegal.info/), not legal advice. Work product supports instructing solicitors and barristers under their supervision. England & Wales.*