It came after cybersecurity chiefs warned UK organisations on Wednesday that a “critical security issue” had been discovered in PHP, which is used by almost 70 per cent of websites according cybersecurity firm Cloudflare.
PHP is a popular programming language used across an immense number of popular websites.
The issue has affected many official websites including those for hospital resources and school websites, alongside Government portals.
The Office for Budget Responsibility said it had followed guidance to take its website offline “in view of the critical security issues affecting PHP”.
