The key distinction is regulation, not whether the adviser understands the law. An SRA-regulated law firm is subject to firm-level rules and protections. An unregulated legal consultancy can provide many non-reserved commercial legal services, but the same firm-level safeguards do not automatically apply.
Neither model is right for every business. Here are the practical trade-offs.
Four differences worth comparing.
Cost
Law firms may bill hourly, by project or on retainer. Their regulatory and operational requirements can influence fees. Consultancies can have lower overheads and offer flexible pricing, but compare the full scope rather than the headline rate.
Insurance and protection
SRA-regulated firms must have qualifying professional indemnity insurance and follow firm-level rules. Unregulated consultancies are not covered by those compulsory minimum terms. Ask what insurance, complaints routes and individual professional protections apply.
Delivery
A law firm may be best for specialist transactions or disputes. A consultant can support ongoing commercial contracts, negotiations and governance questions. Either model may offer project-based or retained work, so agree the scope and turnaround.
Relationship
A law firm can be instructed on a single matter or become a long-term adviser. A retained consultant can work alongside your team, learning your objectives and commercial risk appetite. The relationship depends on the engagement, not simply the provider's label.
Match the provider to the work.
Consider a regulated provider
For reserved legal activities, such as conducting litigation or exercising rights of audience, or when specialist protections are important. The authorisation requirements and exemptions depend on the matter.
Consider a legal consultant
For recurring contract reviews and negotiations, governance support and a commercial sounding board who learns your business.
For many businesses, the answer is both: a consultant for ongoing non-reserved work and an appropriately authorised specialist when required.
Before engaging anyone, ask who will do the work, how fees are set, what insurance covers the advice and which complaints or redress routes are available. The SRA's authorisation guidance and its guidance on information for clients explain the distinctions.