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Basket optimisation

Boosted basket conversion and accessibility through UX audit, testing, and iterative design improvements.

Quick overview

  • Role:

Lead UX Designer

  • Company:

John Lewis

  • Company:

  • Projected £8.4M annual revenue benefit from conversion uplift. 

  • Improved accessibility and clarity for all users. 

  • Set the foundation for future basket and checkout improvements

  • Impact:

Situation

The basket and checkout experience had not been maintained for years, causing friction and high drop-off. Optimising the experience even slightly could have a significant revenue impact.

Task

  • Improve usability and accessibility across the basket experience. 

  • Reduce errors and confusion that led to abandoned purchases. 

  • Identify changes that would deliver measurable business impact.

What I did

  • Conducted a UX audit using analytics and usability testing. 

  • Analysed customer verbatims, support calls, and behavioral data. 

  • Facilitated multidisciplinary ideation sessions with product, design, and engineering teams. Redesigned error messaging, CTAs, and basket flows iteratively.

  • Validated improvements through testing and analytics monitoring

Impact

  • Projected £8.4M annual revenue benefit from conversion uplift. 

  • Improved accessibility and clarity for all users. 

  • Set the foundation for future basket and checkout improvements

Who I collaborated with

  • Product managers and business analysts. 

  • Engineers and front-end developers. 

  • Designers and accessibility specialists.

Reflections

  • Learned that even small improvements in a high-traffic experience can have outsized business impact. 

  • Iterative testing confirmed that real user behaviour often differs from assumptions. 

  • Collaborative sessions across disciplines improve solution buy-in.

© 2025 by Melissa Robinson. All rights reserved

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