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Use this technical documentation for partnership returns if you’re a software developer working with the Self Assessment online service.
A list of software providers you can use to prepare certain specialist package accounts types, such as audit exempt subsidiary accounts.
Set up and run a business partnership - naming a partnership, registering with HMRC, partnership tax returns and legal responsibilities
Partnership returns technical specifications for Self Assessment Online software developers.
Dstl’s Single Information Environment (SInfoE) architecture solves the problem of accessing information across different systems and domains.
Apply for a Start-up visa if you've been endorsed for a business idea: eligibility, documents, switch to this visa, bring your family.
Liz Lloyd, Minister for the Digital Economy, spoke at the launch of the Software Security Ambassadors Scheme on 15 January 2026.
Don’t include personal or financial information like your National Insurance number or credit card details.
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