Mutual Legal Assistance

If you're dealing with criminal investigations that span jurisdictions, your legal strategy needs to go beyond the immediate request. From overseas disclosure demands to political enforcement risks, you need advice that protects your rights now and supports your long-term security across jurisdictions.

Mutual legal assistance

How can Irwin Mitchell help?

You will receive input shaped by experience across mutual legal assistance procedures and international investigations, including Department of Justice requests, production orders, and treaty cooperation. That means clarity, control, and a legal framework built to stand up to global scrutiny.

From investigation to resolution, we act as an extension to your team, helping you protect your interests, reduce disruption, and move decisively under pressure.

We can support with:

  • Department of Justice requests and overseas cooperation
  • Resisting or responding to mutual legal assistance treaties
  • UK and international production orders and subpoenas
  • Strategic defence planning in multi-jurisdictional investigations
  • Political risk mitigation and reputational defence
  • Specialist representation in foreign courts and extradition contexts.

You will also benefit from fully integrated advice across fraud, tax crime, corruption, and regulatory enforcement, helping you manage risk holistically and plan tactically beyond the current matter.

Speak to a Legal Partner

Our team support you to navigate complexity, seize opportunity and move forward with legal clarity.

Contact our Specialists

Get strategic advice from a team that knows how to protect and grow your business. Please complete our enquiry form and one of our experts will contact you by the next working day.


Alternatively, you can call us now.


Our opening hours are Monday to Friday 8am to 6pm (Excluding Public Holidays).

0370 1500 100

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Making an enquiry

We have several ways you can contact us, either by completing our online contact form, by phone, or using our live chat. If you start your journey online, here are the first steps to working together.
  • contact us
    Complete our online form
    We need a few details to understand your situation and the kind of support you need.
  • Few questions
    We’ll contact you by phone
    On the call our experts will ask you a few more questions to make sure we connect you with the right legal advice from our team.
  • Appointment
    We arrange a full appointment
    Your next step is an in-depth appointment with a specialist solicitor to discuss how we could advise you.

Our commitment to you

Our experts always start by listening, so we understand what matters most from day one.
  • 01
    Clear legal guidance

    You will always get straightforward, honest advice, with regular updates to keep you clear on the way forward.

  • 02
    Specialist knowledge

    A wide-ranging team of trusted specialists who understand what it takes to protect your future, your family or your business.

  • 03
    Your needs first

    Whether you’re navigating complex personal situations or business decisions, we take the time to understand your world and what’s at stake.

Frequently Asked Questions

Here are some of the questions we're frequently asked about Mutual Legal Assistance.

Other Business Crime services

Navigate complex enforcement threats with advice built for the long term. Whether you're managing cross-border cooperation, protecting against reputational damage, or responding to sensitive allegations, you will receive guidance designed to reduce disruption and support future stability.
  • Extradition

    Respond to extradition requests with clarity and strategy. We help you understand your position, challenge unjust proceedings, and coordinate international defence efforts.

  • INTERPOL Red Notices

    Challenge Red Notices and secure freedom of movement. Advice covers political motivation, international enforcement risk, and how to reduce long-term travel or immigration barriers.

  • Internal investigations

    Manage internal liability with a process built to withstand scrutiny. From whistleblowing to regulatory exposure, your business will receive support that aligns with wider governance, compliance, and continuity goals.

  • Cybercrime

    Stay safeguarded through digital investigations and enforcement. We support you across fraud, data breaches, and cross-border cybercrime action.

Recognised for excellence. Chosen for care.

  • Legal 500 Top Tier Firm UK 2026
  • Sunday Times Best Places to Work 2025
  • ePrivateClient Top Law Firms 2025
  • Chambers High Net Worth 2025