N Brown Group Checkout Revenue Recovery Case Study

CASE STUDY

N Brown Group: Checkout Revenue Recovery

Identifying and resolving a critical checkout validation issue impacting over 400,000 customers across multiple fashion brands. Restoring customer access, reducing friction and recovering lost revenue opportunities.

project results

Measurable improvements across key customer journeys

400K

Estimated customers identified as being blocked from entering checkout across migrated brands.

£15M

Estimated revenue opportunity recovered through resolving the validation issue and re-engaging customers.

(Based on AOV of £80, 50% of affected customer pot)

2 months

Issue identified, validated and resolved across front-end and back-end services within a tight delivery timeframe.

the brand

N Brown Group

N Brown Group is one of the UK’s leading fashion and retail businesses, operating multiple e-commerce brands including JD Williams, Simply Be, Jacamo and Fashion World.

Within the Digital Product function, the squad was responsible for key conversion journeys across bag, checkout, promotions, loyalty and delivery experiences. Balancing customer experience, technical architecture and commercial performance.

As brands migrated onto the new headless ecosystem, ensuring checkout stability and customer continuity became increasingly critical.

The challenge

A hidden validation issue blocking customers from checkout

Following the migration from legacy platforms toward a new headless architecture, a backend validation issue was preventing a large number of existing customers from successfully entering checkout.

The issue impacted customers whose delivery address details did not meet newly introduced validation rules within the checkout services architecture.

Key challenges included:

Customers without specific house or flat number formats were unable to enter checkout
The issue affected heritage customer accounts across multiple migrated brands
Customer complaints and contact centre pressure significantly increased
The issue continued scaling as additional brands migrated onto the new platform

The challenge required rapid investigation across customer experience, backend services and operational support teams to identify the root cause and minimise commercial impact.

aventura swimwear

our approach

Combining customer insights with technical investigation

Rather than treating the issue as isolated customer complaints, we took a cross-functional approach to validate the scale, commercial impact and underlying technical cause.

We focused on:

Identifying patterns across customer support complaints
Working with data teams to quantify affected customer volumes
Investigating backend delivery validation logic
Supporting interim operational processes while a long-term fix was developed

This allowed the team to rapidly move from issue identification into delivery planning and customer recovery.

what we did

Execution

The project required close collaboration across digital product, engineering, customer support, CRM and operational teams to resolve the issue at both a technical and customer level.

Root cause analysis

Investigated customer complaints and failed checkout journeys.
Identified backend delivery validation failures within the delivery service.
Validated how the issue scaled across newly migrated brands.

Data & commercials

Worked with data teams to estimate affected customer volumes
Quantified potential revenue impact across customer segments
Assessed operational impact on customerupport teams. s

Customer support & interim processes

Supported interim guidance for contact centre teams .
Created operational documentation for affected customer journeys.
Reduced customer friction while the long-term fix was developed.

Checkout experience & service fixes

Supported backend service updates to resolve the validation failures.
Improved front-end error handling and customer messaging.
Collaborated across engineering and product teams to deploy the fix rapidly.

summary

Results & Impact

Resolving the issue restored customer access across multiple brands while reducing operational pressure and unlocking significant revenue opportunities.

- Over 400,000 customer accounts identified and recovered.

- Significant reduction in checkout-related customer complaints.

- Revenue opportunities reactivated across multiple migrated brands.

- Stronger monitoring and validation processes established for future migrations.

Most importantly, the project helped reconnect long-standing customers with the brands they had previously been unable to shop with following migration onto the new platform.

Key takeaways

Large scale e-commerce issues are not always immediately visible through standard reporting alone.

In this case, a seemingly small validation rule create significant commercial and operational impact when scaled across multiple brands and hundreds of thousands customer accounts.

By combining customer insight. technical and cross-functional collaboration, the issue was identified, quantified and resolved quickly. Protecting both revenue and customer trust across the wider business.

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