Custom plugin development
Defined business rules and administrative workflows are turned into a scoped WordPress plugin with ownership, acceptance criteria and release requirements agreed first.
WordPress plugin development · UK agencies
Selected website delivery
Explore websites delivered across different brands, content systems and commercial requirements by the team behind this service.
A technical WordPress partner behind your team
Oncreation supports agencies when a WordPress brief moves beyond standard page production. We help turn business rules, integrations and existing-code problems into a technical scope that can be reviewed before development begins.
Your agency remains responsible for the client relationship and commercial approval. We own the agreed implementation workflow behind you, surface risks early and keep release responsibilities visible.
White-label WordPress plugin services
Plugin work can affect security, data and live business processes. The right first step is to define what must happen, where it belongs and how it will be accepted.
Defined business rules and administrative workflows are turned into a scoped WordPress plugin with ownership, acceptance criteria and release requirements agreed first.
Connect WordPress with documented APIs, CRMs, payment services or operational tools after authentication, data flow and failure handling are understood.
Review and extend an existing custom plugin where the codebase, dependencies, environments and desired behaviour can be assessed safely.
Reproduce the issue, isolate the cause and confirm a repair route before changing production code or promising an unreliable fixed estimate.
What your agency receives
Features, data, dependencies and acceptance criteria are visible before implementation begins.
Your team retains the client relationship, commercial decisions and final approval.
Staging, compatibility, permissions, error handling and rollback requirements are reviewed before launch.
Maintenance, support, documentation and future compatibility responsibilities are agreed at handover.
From requirement to release
Every stage has a required input and approval point. Timing starts after the information and access needed for that stage are ready.
Business rules, users, current setup and required outcome
Features, data flow, dependencies and acceptance criteria
Repository, staging environment, access and release plan
Plugin implementation, review and functional testing
Agency approval, deployment, documentation and handover
What clients say
Clear communication and dependable delivery, from the first brief through launch.
What impressed me most was their ability to translate ideas into a clean, intuitive and high-performing website that truly reflects the mission of Shiny’s Academy.
Excellent design skills, quick and responsive communication, and an excellent website delivered on time.
His work ethic, integrity and punctuality are impeccable. He is extremely reliable, accommodating and open to client feedback and iterations.
Website Partner packages
Choose a paid pilot, flexible monthly capacity or a six-month partnership. The ongoing plans include the same core service.
A low-commitment way to experience the workflow before moving to ongoing delivery.
Discuss this optionThe complete website partner service with no fixed minimum commitment.
Discuss this optionThe same delivery service at the lowest monthly equivalent rate.
Discuss this optionWordPress, Webflow, Framer and Squarespace marketing websites are included. Next.js, complex integrations, platform fees and paid third-party tools are scoped separately.
WordPress plugin development FAQs
Practical answers about scoping, existing code, integrations, security, pricing and white-label delivery.
We can review custom functionality, integrations, administrative workflows, extensions to an existing custom plugin and defined bug investigations. We first confirm whether the requirement belongs in a plugin, the theme or another system.
A short request is enough to begin discovery, but not always enough for a reliable fixed estimate. We need to understand users, business rules, data, permissions, integrations, edge cases and acceptance criteria before confirming scope, timing and price.
Yes, after a technical review. We need repository or file access, environment details, reproduction steps, relevant logs and clarity about who owns the existing code. Remediation recommendations follow what that review reveals.
Directory submission can be reviewed, but it adds packaging, documentation, licensing, security, support and review requirements beyond a private client plugin. Those responsibilities must be scoped explicitly.
The implementation considers capability checks, input validation, output escaping, nonces, data access and dependency risks relevant to the agreed feature. The exact review and testing level is documented in the scope; specialist penetration testing is separate.
Small investigations, fixes or defined improvements may be scheduled as the active priority when suitable. Bespoke plugins, complex integrations and high-risk changes require technical discovery and a separate quotation before work begins.
Yes. We can sign an NDA, work through your project system and communicate with the client only when your agency authorises it. Your agency keeps the commercial relationship and final approval.
We need an approved specification, acceptance criteria, code and environment access, test data, integration documentation and a named decision-maker. Work begins when the inputs required for the current stage are ready.
Agency delivery insights
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Free website tools
Practical tools for choosing the platform, structuring the website and setting a credible delivery window.
Explore all 8 toolsCompare WordPress, Webflow, Framer, Shopify and Next.js against the project requirements.
Use the toolTurn the business, audience, offers and conversion goal into a practical page structure.
Use the toolEstimate a realistic delivery window from scope, content readiness and project complexity.
Use the toolHave a project?
A focused 30-minute conversation about your typical projects, current capacity and whether the partnership fits.
30-minute introduction
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