We're inviting difference in with our new portal

Choose between our new 'Inviting Difference In' or 'Classic' broker portal

Welcome to the future of lending

The IDI (Inviting Difference In) Broker Portal is Nottingham Building Society’s next-generation broker portal, built to remove friction from the mortgage journey and give brokers faster decisions, greater certainty and more time to focus on their clients.

Powered by MQube’s award-winning Origo technology, IDI represents a step change in how we originate, assess and progress mortgage applications and more importantly, our borrowers’ home ownership journeys. It combines advanced AI-driven processing with a simple, intuitive user experience - delivering decisions in minutes, not weeks.

This isn’t just a fancy new platform. It’s a fundamental shift in how lending should work.

Why we built IDI

The way people live, work and earn has changed, but mortgage processes haven’t always kept up.

Too many applications still get slowed down by manual checks, unnecessary document requests and rigid workflows. That creates frustration for brokers and uncertainty for borrowers.

As a mutual that is over 175 years old with a strong track record of innovation, we knew there was a better way.

That’s why we partnered with MQube in 2024 to reimagine the mortgage journey from the ground up, combining our customer-first lending approach with cutting-edge technology to build something faster, fairer, and fit for modern borrowing.

The result is IDI: a broker portal designed to take the friction out of lending and unlock better outcomes for brokers and borrowers alike.

Choose the right portal

'Classic broker portal'

Our classic broker portal will be unavailable from 7pm Friday 6 March until the morning of Monday 9 March whilst we carry out planned work to upgrade our technology. Thank you for your understanding.

Log into our previous broker portal to place and progress the following applications:

Specialist residential
- Foreign nationals and returning expats
- Retirement interest-only
Buy-to-let and limited company buy-to-let
Product transfers

Note: application reference numbers will begin with '0' or '33'.

Use this portal to progress any standard residential cases you've started but haven't fully packaged.

Log into Classic Register for Classic

New 'IDI broker portal'

Log into our new Inviting Difference In portal to place and progress the following applications:

Standard residential
- Purchase and remortgage (inc new build).
- Repayment and interest-only.

Note: application reference numbers begin with ‘NBS’.

Log into IDI Register for IDI

See service levels for both portals

Why IDI?

IDI is built around speed, simplicity and certainty, without compromising responsible lending. Take a look at the key benefits for brokers.

Decisions in minutes, not weeks - AI-driven underwriting automates document checks and affordability assessments, only asking for additional information when it’s genuinely needed.
Fewer delays, fewer bottlenecks - IDI assesses up to 20,000 data points in real time, reducing unnecessary back-and-forth and manual intervention.
A simpler, more intuitive journey - Designed with brokers, for brokers. Making it easier to submit, track, and progress cases.
Greater certainty for clients - Faster, clearer outcomes help brokers give customers confidence earlier in the process.
Built to evolve - Fully configurable to our lending criteria and risk appetite, allowing us to respond quickly to market needs and expand propositions over time.

Watch the Future Lender series

To show how IDI came to life, and where it’s heading next, we created The Future Lender, a three-part video series filmed in collaboration with MQube, exploring the journey behind the platform...

Episode 1 – the commitment to change

Find out how our partnership with MQube began in 2024, and how a shared vision for innovation helped take IDI from concept to live platform in just 12 months.

Episode 2 – the implementation

Go behind the scenes on what “building better” really means: from improving broker journeys to creating smarter, simpler ways of working for everyone involved.

Episode 3 – the insights

Hear how brokers are responding, what success looks like in practice, and how new-school approaches to lending are shaping what comes next.

What’s live today and what’s coming next

Residential purchase and remortgage applications are the first propositions live on IDI.

Currently available:

Standard residential.
Purchase and remortgage (including new build).
Repayment and interest-only.

Over time, we’ll continue moving additional products onto the platform, including buy-to-let, foreign national applications and future propositions, as part of our phased rollout. Stay tuned for more!

Getting started with IDI

To use IDI, you’ll need to register for the new portal, even if you’re already registered on our existing broker system, now known as 'classic'.

You’ll then choose which system to log into depending on the type of case you’re submitting.
Before registering, please ensure you hold the appropriate Financial Conduct Authority authorisations to submit mortgage applications.

(Note: application reference numbers on IDI begin with “NBS”).

Join the future of lending

IDI is more than a portal. It’s our commitment to building a faster, fairer and more inclusive mortgage market, alongside brokers. If you’re ready to experience a simpler, smarter way to place cases with Nottingham Building Society, we’d love to welcome you in.

Any questions, contact your local BDM

If you have any questions about either of our platforms, please find your closest BDM using the postcode checker below.

Frequently asked questions

What is the IDI Broker Portal?

IDI is Nottingham Building Society’s next-generation broker portal, built to simplify and accelerate the mortgage journey. Powered by MQube’s award-winning Origo technology, it uses AI-driven automation to reduce friction, deliver faster decisions and create a more intuitive experience for brokers and borrowers.

What does IDI stand for?

IDI stands for Inviting Difference In - reflecting our commitment to building a more flexible, inclusive and modern approach to mortgage lending.

How is IDI different from your existing broker portal?

IDI is a completely new platform, designed from the ground up to remove unnecessary manual steps and delays. It automates large parts of the underwriting and assessment process, only requesting additional information when it’s genuinely needed. Our existing portal is now referred to as Classic, and some products will continue to be placed there during the phased rollout.

Do I need to register for IDI if I’m already registered on Classic?

Yes. IDI is a separate platform, so you’ll need to complete a new registration to use it - even if you already have access to Classic. Once registered, you’ll choose which system to log into depending on the type of case you’re submitting.

What products can I submit through IDI today?

IDI currently supports:

Standard residential applications.
Purchase and remortgage (including new build).
Repayment and interest-only.
Additional products, including buy-to-let and foreign national applications, will be added as part of our phased rollout.

How quickly will I get a decision?

IDI is designed to deliver decisions significantly faster than traditional processes. By automating document checks and affordability assessments and analysing up to 20,000 data points in real time, many applications can receive outcomes in minutes rather than weeks.

Does faster decision-making mean less robust lending?

No. Speed doesn’t come at the expense of responsible lending. IDI is fully aligned to our lending criteria and risk appetite, combining advanced technology with robust controls to ensure decisions remain prudent, fair and well-governed.

Will I still be able to speak to Nottingham Building Society if I need support?

Yes. IDI enhances the digital journey but doesn’t replace human support. Our teams remain available to help with queries, particularly on more complex cases, ensuring brokers have both speed and expertise when they need it.

Is IDI secure?

Yes. IDI is built using enterprise-grade technology and security standards. MQube’s Origo platform is designed for regulated financial services environments, with robust controls to protect data and ensure compliance.

Why did Nottingham Building Society partner with MQube?

We partnered with MQube because of its proven, award-winning technology and shared belief that mortgage lending needs to better reflect real lives and modern borrowing. Together, we’ve combined our customer-first mutual approach with cutting-edge AI to create a platform that delivers better outcomes for brokers and borrowers.

How will IDI evolve over time?

IDI is built to evolve. The platform is fully configurable, allowing us to respond quickly to market changes, expand propositions and continuously improve the broker experience as new products and capabilities are introduced.