Official Odoo Silver Partner · United Kingdom
Odoo Development Services in the UK
Need Odoo developers in the UK? OzonLayer builds custom Odoo modules, integrations, reports and automation for UK businesses, on top of the Odoo apps you already use.
As an Odoo development company and official Odoo Silver Partner, our developers work alongside certified functional consultants and cover the full lifecycle: implementation, customisation, integration and ongoing support.
Full stack
Python, PostgreSQL, OWL
Git
Reviewed, versioned code
Silver
Official Odoo partner
UK
What our Odoo developers build
- Custom modules and apps
- Integrations and APIs
- Reports and branded documents
- Automated actions and rules
- Website and portal features
- Code reviews and upgrades
Official Odoo Silver Partner · Certified Odoo consultants
What we build
What Our Odoo Developers in the UK Build
Standard Odoo covers a great deal, but most growing businesses eventually need something that is not in the box. Our team works on the full Odoo stack, from Python business logic and PostgreSQL data models to the OWL front-end framework used in recent Odoo versions.
Custom modules
New apps or extensions for processes Odoo does not cover, such as hire and rental workflows, job costing rules, commission calculations or industry-specific approvals.
Integrations and APIs
Connections between Odoo and e-commerce platforms, marketplaces, payment providers, payroll software, carriers and in-house systems, using Odoo’s external API, webhooks or scheduled data exchanges.
Reports and documents
Branded invoices, delivery notes and quotations built with QWeb templates, plus management reports and dashboards that pull data from several apps.
Automation
Scheduled actions, server actions and automated rules that remove manual steps, such as creating purchase orders from low stock or reminders before contracts expire.
Website and portal features
Custom website pages, eCommerce behaviour and customer or supplier portal screens.
User interface improvements
New views, widgets and fields that make everyday screens faster for your staff.
Where a requirement can be met with configuration or Odoo customisation through Odoo Studio instead of code, we will tell you. Less custom code means lower maintenance costs.
How we work
Our Odoo Development Process
Good Odoo development is as much about process as it is about code. Every development project follows the same six steps.
01
Requirement specification
We document what the feature must do, who uses it and how success will be tested, and confirm that no standard Odoo app already solves the problem.
02
Technical design
Our developers decide which Odoo models to extend, how data is stored and how the change will behave in future upgrades, then share an estimate based on that design.
03
Development in version control
Code is written as separate Odoo modules in a Git repository, never by editing Odoo’s core files.
04
Code review and testing
A second developer reviews each change, and automated and manual tests run in a staging database that mirrors your live system.
05
User acceptance
Your key users test the feature with realistic data and approve it before deployment.
06
Deployment and documentation
We release the module at an agreed time and provide technical notes and user instructions, so the solution is never a black box.
Upgrade-safe code
Development Standards That Protect Your Upgrades
The biggest risk with custom Odoo code is that it becomes expensive to maintain when Odoo releases a new version. We reduce that risk with a few firm rules.
When it is time to move to a newer Odoo release, our migration team ports your custom modules and data together.
Odoo migration in the UK →01
Inherit, do not overwrite
We extend Odoo’s models and views through inheritance, so standard functionality and security fixes keep working.
02
Follow Odoo’s coding guidelines
Consistent structure, naming and manifest files make modules easier for any Odoo developer to understand.
03
Respect access rights
Every new model has access rules and record rules, so users only see the data their role allows.
04
Think about performance
We avoid unnecessary database queries in loops and test with realistic data volumes.
05
Keep modules small and focused
One purpose per module makes testing, upgrading and removing features simpler.
Built for the UK
Odoo Development for UK Requirements
UK companies often need Odoo to work with local systems and rules. Our Odoo developers regularly build for requirements such as these.
VAT and Making Tax Digital
Odoo Enterprise’s UK localisation handles VAT returns to HMRC; we build custom VAT and management reports where your accountant needs a different view of the figures.
Payroll and HR links
Integrations or journal imports from UK payroll software, so salary costs land in the right accounts.
Banking and payments
Bank statement imports, payment file exports and connections to the payment providers you already use.
Shipping
Connectors for carriers where no standard Odoo integration exists, with labels and tracking numbers generated from delivery orders.
Marketplaces and online stores
Syncing products, stock and orders between Odoo and the channels you sell through.
GBP and multi-currency
Reports and documents that show pounds sterling alongside foreign currencies for overseas customers and suppliers.
Cost
What Affects the Cost of Odoo Development
We estimate each piece of development from its technical design rather than using fixed packages. These are the main factors:
Complexity
How complex the business logic is and how many Odoo apps the change touches.
Integrations
The number of integrations and how well documented the other systems’ APIs are.
Data and performance
The amount of data involved and any performance requirements.
Testing and documentation
How much testing, technical documentation and user guidance the change needs.
Training
Whether your users and administrators need training on the new features.
Hosting platform
Custom Python modules run on Odoo.sh or your own servers, but cannot be installed on Odoo Online.
Scoped estimates
Send us your requirements and we will reply with a scoped proposal based on a technical design. For a full ERP project, our Odoo price guide explains what drives the budget.
Why OzonLayer
Why Choose OzonLayer as Your Odoo Development Company
OzonLayer IT Services is an official Odoo Silver Partner listed in the odoo.com partner directory, with 11 customer references published there. Our three certified Odoo consultants work alongside our developers, so technical work is always grounded in how your business actually operates.
Functional and technical skills together
Developers who understand accounting, inventory and sales flows, not just code.
Transparent estimates
Each change is designed and estimated before work starts, so you know the scope and cost up front.
Code you own
Custom modules are documented and delivered to your repository, so they are never a black box.
Remote delivery for UK clients
We work with UK businesses remotely, with on-site visits arranged per project where needed.
Long-term care
After release, our Odoo support services in the UK keep your modules working as your system evolves.
Comparing providers?
Our guide on how to choose an Odoo partner lists the questions worth asking before you hire Odoo developers.
Odoo services in the UK
Related Odoo Services in the UK
Odoo development often goes hand in hand with other services. See all our Odoo services in the UK, or go straight to a service:
Odoo implementation in the UK →
Full ERP rollouts from scoping to go-live.
ERP strategy, process review and project planning.
Odoo customisation in the UK →
Tailoring apps, forms and workflows.
Connecting Odoo with e-commerce, payments and other software.
Version upgrades, including your custom modules.
Help desk, fixes and continuous improvement.
Role-based training for users and administrators.
What drives the cost of a full ERP project.
Outside the UK: Odoo development in Saudi Arabia · in the UAE · other countries
FAQs
Odoo Development in the UK: FAQs
Can’t find what you need? Our team replies to every enquiry with a straight answer on scope, timeline and budget.
Ask an Odoo developer
What Odoo development services do you offer in the UK?
We build custom Odoo modules, integrations and APIs, reports and documents, automation, and website and portal features for UK businesses, and we support and upgrade them after release.
Should we use Odoo Studio or custom development?
Where configuration or Odoo Studio can meet a requirement, we recommend it, because less custom code means lower maintenance costs. Custom modules are the right choice for new business logic, integrations and features Studio cannot build.
Can your Odoo developers work on our existing Odoo system?
Yes. We work on existing Odoo databases as well as new projects, and deliver every change as a separate, documented module in your Git repository.
Can Odoo be integrated with other business tools?
Yes. With professional Odoo integration, it can be connected to CRM systems, eCommerce stores, accounting tools and other third-party applications.
Will custom modules still work after an Odoo version upgrade?
Custom modules need to be updated for each new Odoo version. We build them as separate modules that follow Odoo’s coding guidelines and never change Odoo’s core, which keeps upgrades manageable. Our migration team upgrades custom code and data together.
Can custom modules run on Odoo Online?
No. Odoo Online does not allow custom Python modules; it supports configuration and Odoo Studio only. For custom development, we recommend Odoo.sh or your own servers.
Can you take over custom code written by another developer?
Yes. We start with a review of your existing modules, report on code quality, security and upgrade risks, and then agree a plan to fix, improve or replace them.
What affects the cost of Odoo development?
The cost depends on the complexity of the feature, the number of apps and integrations involved, data volumes, and testing and documentation needs. We estimate every change from a technical design and send a scoped proposal before work starts.
Who owns the code you write?
You do. Custom modules are documented and delivered to your repository, so your own team or any Odoo developer can maintain them.
How do we start an Odoo development project?
Book a free consultation and share your requirements. We review them, advise whether configuration or custom development is the better fit, and send you a scoped proposal.
Odoo Silver Partner · United Kingdom
Talk to our Odoo developers
Share your requirements and we will advise whether configuration or custom development is the better fit, then send you a scoped proposal for the work.
Call +44 7477 204638 · Email info@ozonlayer.com
Odoo Certified
Certified Odoo Consultants
Functional certification · United Kingdom