What is IIM Membership?
The Institute of Interim Management (IIM) is the UK’s only professional body dedicated to independent Interim Managers and Executives.
Membership provides professional accreditation (AIIM/MIIM), legal protection (including Tax Investigation Insurance), and access to a hidden market of assignments via a private community network.
Credibility, Visibility, and Assignments.
Whether you are new to the interim lifestyle or a seasoned portfolio executive, IIM membership signals to clients and Interim Service Providers (ISPs) that you adhere to the highest ethical and professional standards.
Key Member Benefits:
The IIM consistently ranks highly in search results for key interim-related terms, including:
By joining the IIM, your profile becomes part of a trusted platform visited by thousands each month — giving clients, providers, and peers a clear path to discover, evaluate, and contact you directly. Make it easy for the right people to find you, trust you, and engage you.
IIM members don’t just join a directory — they join a thriving, active network. This isn’t a static list of names; it’s a live community that shares leads, opens doors, and supports one another in sourcing assignments, building credibility, and staying market-ready. Assignments often come from who you know — not just what you know.
Gain real-time updates from fellow members through our exclusive WhatsApp group. Assignments are frequently shared here before appearing elsewhere, and the group is a trusted place to make referrals, check rates, and sense-check client briefs.
IIM’s assignment-sharing platform lets service providers and members post live interim roles to the community. Opt in by function to receive concise, relevant email alerts—so you only see opportunities that fit.
Our public LinkedIn group gives you access to clients, providers, and peers in open conversation. It’s where market trends, new roles, and visibility collide. Many members say they’ve secured work through these relationships — often without ever sending a CV.
Tap into the collective experience of the IIM membership. Whether it’s a warm intro to a provider, teaming up on a complex assignment, or simply staying close to market movements, the power of the network lies in mutual visibility and trust.
Our official LinkedIn Company Page raises awareness of the profession and spotlights the breadth of expertise across the IIM community. Through regular posts, insights, and member features, it’s where the industry pays attention — and where you can amplify your presence.
Need help navigating the market? Explore our definitive list of Leading Interim Service Providers to see who’s active, credible, and trusted by your fellow members.
The IIM can help you source assignments with Interim Service Providers.
Click here for the definitive list of Leading Providers https://iim.org.uk/providers/
As the “voice of the industry” the Institute promotes the benefits of Interim management to business on behalf of all Interim Managers and Executives. This involves working with businesses, Interim Service Providers and other organisations to help towards a better understanding of what an Interim Executive does, how that differs from hiring a permanent executive and what the benefits of using an Interim are. That way more opportunities are created for you.
By hosting your profile and contact details on the platform you can be found and contacted directly via the member directory search.
You can showcase your expertise to Clients and Interim Service Providers who are able to search by skill-set, sector, industry, name, or location. Your profile will show your picture, links to LinkedIn, X (formerly known as Twitter), your website and your availability. Clients and Providers may immediately access your CV, case studies and Continuous Professional Development (CPD) record as applicable.
Plus: they have the comfort and assurance that you are an accredited Member of the Institute.
A short profile video can be hosted on a dedicated YouTube channel and also a link held within your public profile on iim.org.uk.
Giving Members the invaluable opportunity to connect and interact directly with each other as well as members of the Board.
New assignments are frequently shared by Members in the WhatsApp Community. The wider, public, LinkedIn group is also a great source of discussion and assignment opportunities.
Keeping your skills current and your thinking fresh is a key part of succeeding in interim work. The IIM offers ongoing learning and training opportunities to help you stay ahead of the curve — and improve your chances of landing your next assignment.
As a member, you gain free or discounted access to IIM-hosted events throughout the year.
Our workshops focus on real-world tools, techniques, and insights. Topics are based on member feedback and current market demands — from personal brand building and assignment sourcing to rate negotiation and commercial resilience.
Every session is designed to address what matters to working Interims — legal changes, economic signals, and evolving client expectations — to ensure you’re not just informed, but assignment-ready.
Once accredited, Interim Managers and Accredited Associates may use the Institute’s well-known branding and the proof of accreditation ‘MIIM’, ‘AIIM‘, alongside any other professional qualifications.
A range of logos including with MIIM/AIIM branding, can be downloaded and used on business cards, website etc.
As a Member of the IIM, you have the right use the letters MIIM (Member of the Institute of Interim Management) after your name and to download member logos for your use on your business cards, website etc. as actual proof of your accreditation.
Since July 2015 Members have been covered free by Tax Investigation insurance cover in case HMRC issue an investigation notice.
Receive a discount on your Professional Indemnity and other Insurances as a member.
Capital on Tax Credit Card and FinFe finance.
Information zone and status determination too.
Obtain advice by phone from Abbey Tax Protection, included only in IIM paid membership.
Professional costs associated with a formal investigation by the revenue authorities are covered within your Membership fee (see terms for details). An IIM direct client contract template serves as “IR35 friendly” template for direct Interim-Client contracts.
Have your voice heard
The IIM lobbies on behalf of all accredited members and professional career Interim Executives to each relevant government department.
This includes responding to government consultations, communicating with Members of Parliament and working in tandem with other professional bodies where appropriate.
The Institute is the only recognised body for professional Interim executives in the UK. We represent the profession and our members with Governmental agencies, Tax authorities and other professional bodies in the UK and across Europe.
Established in 2001 the IIM gathers vital information and feedback through the flagship annual survey and over many years has developed a deep professional relationship with the industry’s ISPs (Interim Service Providers).
There are two levels of Membership of the Institute based on your level of experience in the profession.
New to the profession, with two or fewer significant, clearly recognisable, interim assignments, would likely grant you Associate (AIIM) level.
For more experienced interims, with multiple significant and clearly recognisable interim assignments completed, you would likely be granted full Member (MIIM) level.
Note: as part of the application process, you must be able to provide a) evidence of being in business on your own account (e.g. UK Company Registration Name & Number); b) contact details for 2 business referees (either recent interim assignment clients for experienced interims or businesses for whom you have worked for new interims; they cannot be ISPs/Agencies or personal referees) and c) a copy of your current CV. Please ensure you have these available before starting to prevent unnecessary delay.
As an Associate’s (AIIM) experience expands, you can request to be considered for the full Member (MIIM) level, by submitting an updated CV with at least three clear interim assignments and 2 referees from those interim assignments.
When you join The IIM you are fully protected by a 100% Satisfaction Guarantee. If you feel you haven’t received value and decide to cancel any time within the next 30 days, just let us know and we’ll send you a prompt refund of your subscription. We’re confident you’ll find the IIM a valuable resource in helping you achieve your goals as an Interim professional. No ifs or buts – if you’re not completely satisfied within your first 30 days then we’ll refund you without any fuss.
(Please note the Assessment Fee is non-refundable)
Thinking about joining the IIM? We understand it’s a commitment — and it’s natural to have questions. Below, we’ve answered the most common ones to help you make an informed decision and join with confidence.
Joining the IIM connects you to the UK’s leading community of accredited Interim Managers. As a member, you gain directory visibility, access to assignments, professional recognition (AIIM or MIIM), exclusive events, training, tax protection, and discounts on essentials like PI insurance. It’s support, credibility, and opportunity — all in one place.
The IIM welcomes experienced Interim Managers and those entering the profession. Whether you’ve delivered multiple recognised assignments or are building your portfolio, there’s a pathway for you. The assessment process helps ensure that all members meet the professional standards expected by clients and providers.
Associate (AIIM) status is typically granted to Interims with up to two significant, recognised assignments. Full Member (MIIM) status is awarded to those with a deeper track record of delivering interim work. Both levels demonstrate professional standing — and you can apply for MIIM status as your experience grows.
The IIM’s independent panel reviews your experience, assignments, and approach to Interim work. This ensures all members meet a consistent standard of professional capability, integrity, and impact. The process helps maintain trust in the IIM directory and the credibility of the AIIM and MIIM designations.
Most membership applications are assessed within 2–4 weeks. Timelines can vary depending on the completeness of your submission and the current volume of applications.
As your interim experience grows, you can resubmit your details to be reassessed for MIIM status. There’s no fixed timeframe — when you’ve delivered multiple clearly recognisable assignments, you’re welcome to apply for full membership.
We understand that needs change. If IIM membership isn’t the right fit, you’re free to cancel at any time. You’ll retain access to benefits for the remainder of your current membership period.
We don’t offer a free trial, but you’re welcome to browse our website, follow our LinkedIn Company Page, or join the public LinkedIn group to get a feel for the community. Many of our public webinars and resources give a strong preview of what members experience inside.
You can cancel your membership at any time. While no refunds are issued for unused time, you’ll continue to receive access until your current membership term ends. All benefits and accreditations cease after expiry.
Yes — if your membership application is not accepted after assessment, your payment is refunded in full.
Yes. Once approved, you can use either AIIM or MIIM post-nominals and download official member logos for use on business cards, websites, CVs, and proposals — adding instant proof of your accreditation.
Your profile is fully searchable by clients and providers — filtered by skillset, sector, location, and availability. You can include links to LinkedIn, upload your CV, and even add a short video intro. Many members are contacted directly through the platform.
Joining the Institute of Interim Management (IIM) connects you to the UK’s most established professional body for Interim Executives. Whether you’re early in your journey or a seasoned practitioner, IIM membership offers structured support, peer credibility, and greater access to assignments.
Professional RecognitionGain accredited status as an Associate (AIIM) or full Member (MIIM) — formal proof of your expertise, ethical standards, and track record. These post-nominals are trusted by clients and Interim Service Providers alike.
Increased VisibilityYour profile is listed in the IIM’s public directory, where clients and providers search by skill set, sector, and availability. With direct contact options and downloadable credentials, your presence becomes both visible and credible.
Continuous DevelopmentStay ahead with access to curated training, accredited workshops, industry webinars, and exclusive member-only events. Content is shaped by real-world feedback and aligned to what hiring clients look for.
Business Protection & ToolsIIM membership includes practical benefits that protect and support your work, including Tax investigation insurance, Discounted PI and business insurance, IR35 status guidance and templates and, Access to vetted business services.
A Trusted NetworkTap into one of the most active peer communities in the profession. From WhatsApp referrals to structured mentoring and informal collaboration, your network grows with every interaction. IIM membership gives you more than credentials — it gives you connection, confidence, and career momentum
