Wall & Fifth

Ecommerce UX & UI design. Every interface decision is a revenue decision.

In ecommerce, UX is not about delighting users — it is about removing every reason not to buy. The layout of the product page, the clarity of the variant selector, the placement of the trust signals, the friction in the cart, the number of fields in the checkout — each of these is a revenue variable, not a design preference. Wall & Fifth designs ecommerce interfaces with that clarity about what each decision is actually doing.

£3k / month

Starting retainer

3–4 maximum

Clients at any time

12+ internally

Ventures built

No lock-in

Commitment

UX as a revenue variable

Every UX decision in an ecommerce store has a measurable revenue consequence. The position of the add-to-cart button on the product page. The number of fields in the checkout. The clarity of the size guide. The placement of the returns policy. These are not aesthetic decisions — they are commercial decisions that happen to be expressed through design.

Most ecommerce UX work fails because it treats these decisions as design problems rather than commercial ones. The result is a store that looks considered but has not been designed with the specific conversion logic of ecommerce in mind. Pretty layouts that do not surface the product clearly. Navigation that reflects the brand's internal organisation rather than the customer's mental model. Trust signals buried below the fold where they do not influence the purchase decision.

Wall & Fifth designs ecommerce interfaces with the commercial logic explicit at every decision point. What is this element doing? What does the customer need to see at this moment in the purchase journey? What would make them more likely to continue, and what would give them a reason to leave?

Discovery to product page

The journey from store arrival to product page has three primary failure modes. First: navigation that requires the customer to understand the brand's internal product taxonomy rather than browse in the way they naturally think about the category. A customer looking for "something to wear at a summer wedding" is not looking for "occasionwear > midi dresses > floral." They are browsing by occasion, mood, or occasion-specific need.

Second: collection pages that do not surface the right product to the right customer efficiently. Poor sorting defaults, filtering systems that require the customer to know the product range before they can use them, and grid layouts that give equal weight to every product regardless of its commercial importance.

Third: collection page imagery that does not differentiate between products quickly enough. If every product card looks similar, the customer has to click into each product to understand what it is. That friction accumulates across a browsing session and produces a lower click-to-product-page rate.

Product page architecture

The product page is where the purchase decision is made. Its architecture has to be designed around the specific sequence in which a customer evaluates a product — which is not the same sequence in which a designer finds it most visually interesting to present it.

The customer arrives at the product page with a set of questions they need to answer before they can commit: Is this actually what I want? What does it look like in real life? Will it fit? Is the quality worth the price? What do other people think? What happens if it is not right? Each of those questions has a corresponding design element — and those elements need to appear in the order the customer needs them, not the order that produces the most balanced layout.

We design product pages around that question sequence. Imagery that answers "is this actually what I want" immediately. Specification and sizing that answers "will it fit" before the customer has to search for it. Social proof positioned at the moment of maximum hesitation — not decoratively distributed across the page.

Cart and checkout

Cart and checkout abandonment is the most expensive UX failure in ecommerce — because it occurs at the highest-intent moment in the funnel. The customer has decided to buy; something in the checkout process has changed their mind. The causes are almost always the same: unexpected costs, required account creation, a multi-step process that feels disproportionate to the purchase, or a payment page that does not look trustworthy.

We design checkout flows that eliminate each of those failure modes: shipping costs surfaced before checkout, guest checkout as the default path, a single-page or minimal-step checkout architecture, and consistent brand treatment through to the payment step.

How we work

We audit the existing store's UX against the full purchase journey — from arrival to post-purchase confirmation — identifying the specific friction points that are producing drop-off. We produce a prioritised set of design improvements ordered by commercial impact, implement them, and measure the effect.

What you get

  • Full purchase journey UX audit — arrival to post-purchase
  • Collection page architecture — navigation, filtering, grid design
  • Product page template — question-sequence architecture
  • Variant selection system design
  • Cart and checkout flow redesign
  • Mobile-specific layouts for all critical pages
  • Post-purchase email design
  • Developer handoff — complete specifications
In ecommerce, the difference between a 2% and a 4% conversion rate is not a design quality difference. It is a friction difference. Find the friction. Remove it.

Frequently asked questions

What are the highest-impact UX improvements for most ecommerce stores?

In order: product page trust signals and CTA clarity, checkout friction reduction, mobile navigation and product browsing, and collection page hierarchy. Most stores have significant conversion leakage on the product page before the customer even reaches the cart — which makes product page UX the highest-leverage improvement available for most brands.

How do you approach variant selection UX for complex products?

Variant selection is one of the most commonly broken UX elements in ecommerce. The standard dropdown selectors do not communicate product availability, do not show what the variant looks like, and create confusion about what the customer is actually selecting. We design variant selection systems that make the options clear, communicate availability and lead times honestly, and update the product imagery to reflect the selected variant.

What is the most common checkout UX failure?

Unexpected costs at checkout — most commonly shipping costs that were not clearly communicated earlier in the journey. The customer has invested time in the purchase decision, arrived at checkout, and discovered that the total is higher than expected. That surprise produces abandonment at the highest-intent moment in the funnel. The fix is not a design fix — it is a communication fix: shipping costs surfaced on the product page, not hidden until checkout.

How do you design for returning customers differently to new visitors?

New visitors need orientation — they need to understand the brand, the range, and why this store is worth their time. Returning customers need speed — they know the brand, they want to find and buy specific things quickly. These are different UX requirements. We design navigation and homepage experiences that serve both, using logged-in state and browsing history signals where the platform supports them.

Do you design the email and post-purchase experience as well?

Yes where the engagement includes it. The post-purchase experience — the order confirmation, the shipping notification, the delivery email — is the highest open-rate communication an ecommerce brand sends and one of the most commonly neglected. It is also the moment when a first-time buyer's impression of the brand is being formed. We design it as part of the customer journey, not as a transactional afterthought.

Design the interface that sells.

Tell us about the store and where customers are dropping off. We will tell you what the right UX engagement looks like.