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What changed for UK businesses this week.
Short briefs on the changes that affect how UK businesses run: tax and reporting rules, data protection, cyber security, AI and the software firms pay for each month. They update automatically each morning from government, regulator and trade sources, and each one links to the original.
Self Assessment deadline is 31 January 2027, HMRC reminds 12 million filers
HMRC says about 12 million people must file 2025 to 2026 returns and pay any tax by 31 January 2027. Paper returns are due earlier, on 31 October 2026.
NCSC urges UK firms to patch critical PHP flaw allowing remote attacks
The NCSC says a critical PHP flaw could let attackers run commands on web servers. PHP has released a fix, and the NCSC urges all organisations to update.
Microsoft adds tools to monitor AI agents used inside businesses
Microsoft has launched Guardian Agents and new Defender features to spot and limit AI agents that staff bring into the workplace, citing their unpredictable behaviour.
Google launches Gemini agent that works across business apps
Google has launched a Gemini agent that plans and carries out tasks across business systems, with its own Workspace account and an audit trail. It is starting with business customers.
Sole traders and landlords over £30,000 must use Making Tax Digital from April 2027
HMRC says sole traders and landlords with turnover above £30,000 must sign up and use MTD for Income Tax from 6 April 2027, sending quarterly digital updates via compatible software.
ASOS incident exposed customer names and contact details
The NCSC says ASOS is investigating an incident on 6 October after unauthorised push notifications and access to customer names and contact details; payment cards and passwords are not believed affected.
NCSC and partners call out China linked firm for enabling global cyber attacks
The NCSC and six partner agencies published an advisory naming Integrity Technology Group as enabling China linked actors to use AI, botnets and manual techniques to steal confidential data.
Xero launches JAX agentic platform, JAX Assure and XeroForce for advisers
Xero says it is building an agentic commerce platform called JAX, with JAX Assure guardrails and a no-code agent builder XeroForce to give advisers enforceable governance.
CMA opens consultation to give Microsoft strategic market status for business software
The Competition and Markets Authority proposes designating Microsoft as an SMS for business software, with comments due 13 November and a final decision by 13 February 2027.
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