We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
Minimum technical specification for manufacturers of chargepoint units for residential properties covered by OZEV chargepoint grant schemes.
Find schema and technical specifications for Construction Industry Scheme Online software developers.
Technical specifications for developing software to send information to Companies House digitally.
Internet submissions technical specifications for Real Time Information online software developers.
The Customs Handling of Import and Export Freight (CHIEF) system is supported by detailed user guides for trade users. For Direct Trader Input to CHIEF and Inventory system linking we have the Technical Interface Specification guides.
Guidance for child health information system (CHIS) providers on information requirements, and suppliers on specifications for collecting and reporting data.
Find technical specifications for software developers working with the Pension Schemes Online service.
Guidance on out of specification investigations, including definitions and laboratory analysis and phase I,II and III investigations.
Returns technical specifications for Self Assessment Online software developers.
Use this technical documentation for individual returns if you're a software developer working with the Self Assessment online service.
Charities repayments claims technical specifications for software developers.
Chargepoint and infrastructure specifications and claim guidance for electric vehicle chargepoint and infrastructure grants.
Technical specifications for New Computerised Transit System (NCTS) software developers.
Business and technical specifications for local authorities and software suppliers to prepare for the alternative provision census 2023.
Find out technical specifications if you're a Pension Schemes Online software developer.
Use this technical documentation for partnership returns if you’re a software developer working with the Self Assessment Online service
Find out about the Excise Movement Control System (EMCS) specifications for software developers.
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. We’ll send you a link to a feedback form. It will take only 2 minutes to fill in. Don’t worry we won’t send you spam or share your email address with anyone.