The funding is part of the AI Ethics Initiative at NHSX in the UK.
Also, new guidance published on classification of medical devices in the EU.
ORCHA study found musculoskeletal and physiotherapy apps were most popular.
The investment will support further growth in key markets.
The market is forecast to reach $9.13 billion (€7.84 billion) by 2026.
More than five million adults will be able to access to CBT through Big Health’s apps.
The deal will provide guaranteed capital to fuel the firm’s rapid growth plan.
A study by Imperial College London found the therapy was more effective in treating stress, anxiety and PTSD than popular meditation apps.
The regulator’s report flagged governance issues in the midwifery and pediatrics service.
The firm provides a food replacement and digital support programme for people living with type 2 diabetes.