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Register to vote Register by 18 June to vote in the General Election on 4 July.
Guidance on APIs and how to find commercial software suppliers for different HMRC online services.
Find technical specifications for software developers working with the Corporation Tax online service.
Information and resources for developers about broadband infrastructure and connectivity requirements for new homes.
If you're a software developer, use the HMRC Developer Hub to learn about and integrate your applications with our RESTful APIs.
Find technical specifications and support for software developers working with the Construction Industry Scheme Online service.
Support and technical specifications for software developers working with the Self Assessment online service.
Find Document Submission Protocol guidance for architects, software developers and other parties interested in building Transaction Engine client applications.
Use of planning obligations and process for changing obligations.
How to register as a software developer with HMRC.
What you need to do as a developer to meet biodiversity net gain (BNG) requirements.
Reduce development overhead and time to deployment by standardising how teams design, launch and manage APIs in your organisation.
Sets out key principles in understanding viability in plan making and decision taking.
How developers can get advice on Nationally Significant Infrastructure Projects (NSIPs) and applications for planning, permission in principle and technical details consent.
How developers can get their health app assessed and endorsed.
Find technical specifications and schemas for National Export System (NES) XML channel software developers.
MHRA scientific and regulatory advice for COVID-19 vaccine developers
A collection of guides to support the development of combined heat and power (CHP) installations.
Support and technical specifications for software developers working with the Charities Online service in making repayment claims.
This code of practice sets out minimum security and privacy requirements for app store operators and app developers.
Don’t include personal or financial information like your National Insurance number or credit card details.
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