Services · Ecommerce development · Inventory management subscription sites
We deliver inventory management subscription website development London software companies rely on when their product has outgrown a pricing page and a payment link. Codeeo builds the plans, checkout, recurring billing and customer portal for vendors selling stock control to direct to consumer brands, multichannel sellers and enterprise retail teams. The site handles monthly and annual terms, several currencies, VAT and overseas tax, and the procurement paperwork that bigger London buyers ask for before they sign.
Most London inventory products sell well beyond the M25 within their first year. The billing platform we build is ready for that: prices by region, tax handled by customer location, and reporting your board and investors can read without a finance analyst rebuilding it each month.
200+ companies servedFrom a first store to an ADX listed developer
What we build
A London stock platform is usually competing with well funded rivals for the same Shopify brand or wholesale buyer. The product may be excellent, but buyers judge it first on the pricing page, then on how painless it is to start, and later on whether invoices are right. A clumsy upgrade or a confusing overage charge sends a customer to a competitor faster than a missing feature.
These are the components we put around your product. Not every vendor needs all of them on day one; we help you pick the ones that match your stage, whether you are signing your first fifty self-serve brands or closing six figure enterprise deals with long procurement cycles. London buyers in particular compare several vendors side by side, often with a spreadsheet open, so every claim on the page has to match what the product and the invoice actually do.
Separate prices in pounds, euros and dollars rather than a converted figure that changes daily. Visitors see the currency for their region, invoices are raised in it, and you can adjust each market's prices independently when you learn what each will bear. Rounded local prices also read better on a pricing page.
Overseas buyers see a stable price in their own currency.
UK VAT on domestic invoices, VAT number validation for business buyers abroad, and support for overseas tax registrations where your accountant says you need them. The billing provider's tax engine works out the treatment; we configure it and test the edge cases.
Invoices that stand up when your accountant reviews them.
London sellers often price by connected sales channels, such as a web shop, marketplaces and wholesale, plus users and warehouses. We model those as plan components so a brand adding a marketplace or a third party logistics warehouse moves to the right price automatically.
Growth in a customer's business shows up in your revenue.
A security page, data processing terms, an uptime and status link, and a contact route for security questionnaires. Approved deals become subscriptions through order forms with negotiated terms, PO numbers and invoice payment, without a separate manual billing process. Renewal terms stay visible to sales.
Enterprise deals close inside the same billing system.
Larger customers expect their staff to log in to the account area with their company identity provider. We add SSO for the billing portal and role based permissions so a finance contact can see invoices while an operations lead manages users.
Enterprise IT teams approve access faster.
Card checkout with 3D Secure where the bank requires it, Apple Pay and Google Pay for small brands signing up on a phone, and pay by bank options through Open Banking providers. Renewals run as merchant initiated payments so customers are not asked to authenticate every month.
Fewer abandoned sign ups at the payment step.
Clear rules for mid cycle changes: upgrades bill a prorated amount now, downgrades take effect at renewal, and annual customers adding seats pay a co-termed amount. We document each rule in the help centre so your support team never has to improvise an answer.
Plan changes that customers and finance both understand.
Monthly recurring revenue, net revenue retention, churn and failed payment rates calculated from billing events and sent to your data warehouse or Power BI. Board packs come from the same numbers the finance team reconciles.
Investor reporting without spreadsheet archaeology.
Ecommerce agencies across London recommend stock tools to their clients. Partner sign up, tracked referral links, partner billing of client accounts and commission statements let you grow through them without hand counting referrals each quarter.
Partner revenue measured from real invoices.
Smart retries timed to card network rules, reminder emails written in your brand voice, a banner inside your product and a grace period before any feature is restricted. Annual customers receive a renewal notice ahead of the charge, and expired cards can be updated from a secure link without logging in.
Involuntary churn kept low without heavy handed lockouts.
Who this is for
The city's software scene runs from founders in Shoreditch and King's Cross to established vendors whose customers include West End retailers and warehouses in Park Royal. Their needs for subscription platform development London buyers will trust vary with the stage of the company and the kind of customer they chase. These four pictures cover most of the teams we talk to. Some start with nothing but a payment link; others already have a billing system that no longer fits the way they sell.
You raised a round, customers are signing up, and billing is a mix of payment links, manual invoices and a spreadsheet of who is on what plan. We replace that with a proper subscription model, migrate every customer and give you clean revenue data before your next round. We also set up the revenue metrics your board will ask about, calculated the same way every month, so due diligence questions get answered from the system rather than from memory.
Clean billing data is usually the first thing investors ask for.
Your customers are online brands that add channels, warehouses and staff quickly. They want to upgrade themselves in minutes, often on a phone between meetings. We build self-serve plan changes, usage visibility and a checkout that works well on mobile browsers. Usage alerts tell a brand when a sale weekend will push it into the next tier, which avoids the angry support ticket that follows a surprise invoice.
You have hundreds of smaller customers and now want retail groups and wholesalers with procurement teams. We add order forms, invoice payment, SSO, security documentation and negotiated pricing, while keeping the self-serve side untouched. Large accounts get their own price book and approval rules, and sales can see from the CRM which renewals are coming up.
Both buyer types run on one billing platform.
Your first overseas customers are already paying in sterling and asking for local currency. We introduce euro and dollar price books, configure tax handling with your advisers and localise invoices, so international growth does not need a second billing system. Each market's checkout, invoice wording and support pages can then be adjusted without affecting the others.
How we work
Codeeo is a team of 80+ across Dubai, Riyadh and Karachi, with 200+ projects delivered across the UAE and the US and a 4.7 rating from 23 Google reviews. We have no office in London; we work with London clients remotely, and discovery, design reviews and demos happen by video call. Your founders, finance lead and head of sales each join the sessions that concern them. Cost is driven by the number of currencies and tax regimes, the integrations involved, enterprise features such as SSO, and the size of the customer migration.
Most of our inventory management billing integration services London teams ask for sit between the billing provider, the product and finance systems, and that is where we spend the most testing effort. Good inventory management SaaS website development London buyers trust also depends on the marketing pages: honest plan limits, real screens and a clear route to talk to sales.
A defined build with a deadline
We agree what the product has to do, write it down with a price and a date, and build exactly that. Changes are priced before they are made, not discovered on the invoice.
A product that keeps evolving
Named engineers who work your hours, join your standups and stay on the codebase. You direct the backlog; we own the quality of what ships.
Something live that needs looking after
A monthly block of hours for improvements, fixes and the small requests that otherwise wait months. Unused hours carry for a quarter.
Technology
Typical builds use Next.js or React for the pricing site and portal, Stripe Billing or Chargebee for subscriptions, invoicing and tax, and Laravel or Node services for entitlements and integrations. Data flows to Xero or Business Central for accounting and to Power BI for reporting. Everything sits in your accounts.
01Web
02Commerce
03Data and cloud
04Marketing and tracking
It depends on billing complexity more than page count.
A single currency, self-serve setup with a hosted billing provider is the quickest route. Each extra currency, tax registration, enterprise feature or integration adds design and testing time, and migrating a large customer base needs a parallel run. We agree the release order in discovery, often pricing and checkout first, then the portal and enterprise path, and put the timing in writing once that scope is fixed. If an investor deadline or a launch event fixes your date, tell us in the first call and we will shape the first release around it.
Schedule a free consultation and get a written recommendation, with costs, before you commit to anything.
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