Multiple employees at the UK's frontier AI testing body are undergoing counseling and taking medical leave due to workplace stress. Sources told the Financial Times that tight schedules for testing unreleased models and alarm over rapidly growing capabilities have led to burnout, as reported by four individuals familiar with the matter. Former researchers highlighted concerns within cyber and bio teams regarding models that can identify undiscovered code flaws and create viruses unknown in nature.

Similar pressures have triggered resignations and mental health leave at DeepMind, OpenAI, and Anthropic. A DeepMind employee stated that the industry's current pace of development is incompatible with safety standards. The UK AI Safety Institute serves as a global leader in independent testing and employs its personnel on civil service pay.