DocuSign is the name everyone knows. But in 2026, UK law firms have specific needs that DocuSign was never built to address. This is an honest comparison of what UK solicitors actually need and how the main platforms stack up.
What UK Law Firms Actually Need (That DocuSign Doesn't Provide)
Built-in payment collection. When you send an engagement letter, you want the client to sign and pay your retainer in the same flow. DocuSign doesn't have payment collection. You send the document, they sign it, then you separately chase the bank transfer. Two steps where the client can stall.
AML/KYC identity verification. The Money Laundering Regulations 2017 require you to verify client identity. DocuSign has no identity verification built in. You need a separate tool — another login, another cost, another manual step.
HMRC 64-8 support. DocuSign has no awareness of UK tax practice. No help with 64-8 Agent Authorisation forms.
UK-specific document templates. DocuSign's template library is US-centric. UK engagement letter formats, Law Society-aligned NDAs — you're building from scratch.
GBP pricing with UK support. DocuSign prices in USD, bills annually, and support is US-timezone by default.
The Main Alternatives
Adobe Acrobat Sign integrates well with Acrobat and Microsoft 365 but has the same fundamental gaps: no payment collection, no identity verification, no HMRC form support. A lateral move from DocuSign.
Docuseal is open-source and cost-effective. Good for technically capable teams wanting data on their own infrastructure. Not suitable for firms wanting a complete solution out of the box.
PandaDoc has a genuinely good document editor and basic payment collection, but payment routing is limited and there's no AML/KYC or HMRC support.
Thirdfort is the best standalone AML/identity verification tool for UK practices but e-signature functionality is secondary. Not suitable as a primary document signing platform.
SignFlow Now was built specifically for UK legal professionals. E-signatures, payment collection, identity verification, and HMRC form support in a single platform. Clients receive one link, sign the document, verify their identity, and pay their retainer in a single five-minute session. £30/month per user. 14-day free trial.
Head-to-Head Comparison
| Feature | DocuSign | Adobe Sign | PandaDoc | Thirdfort | SignFlow Now |
|---|---|---|---|---|---|
| E-signatures | ✓ | ✓ | ✓ | ✓ | ✓ |
| Payment collection | ✗ | ✗ | Basic | ✗ | ✓ |
| AML/KYC verification | ✗ | ✗ | ✗ | ✓ | ✓ |
| HMRC 64-8 support | ✗ | ✗ | ✗ | ✗ | ✓ |
| Right to Rent | ✗ | ✗ | ✗ | ✓ | ✓ |
| AI contract review | ✗ | ✗ | ✗ | ✗ | ✓ |
| UK-specific templates | ✗ | ✗ | ✗ | Partial | ✓ |
| GBP pricing | ✗ | ✓ | ✗ | ✓ | ✓ |
The Real Question
The question isn't which platform has the most features. It's what does your firm actually need, and which platform addresses those needs without creating new friction. DocuSign built the e-signature category. But it didn't build it for UK legal practice.