Organisations should no longer collect ‘classic’ or ‘next generation (Medication, Mental Health, Maternity and C&YPS)’ Safety Thermometer data or submit it to the Safety Thermometer portal. Information on replacement metrics drawn from routinely collected data can be found on the Patient Safety Measurement Unit webpage.

The Safety Thermometer, launched in 2010, was one of the largest and longest-lasting data collection exercises in NHS history. It had a powerful impact in its early years. But more recent evaluations, research and feedback have shown that the data was incomplete, and it was no longer able to support improvement in the intended way. Because of this, new data sources were explored that could take the burden of data collection away from clinical staff and support new improvement initiatives. Ending the Safety Thermometer were publicly consulted on in 2019/20 as part of proposed changes to the NHS Standard Contract. The response supported ending the national collection of Safety Thermometer data from April 2020, and using alternative data sources to continue improving pressure ulcer prevention, falls prevention, VTE prevention and prevention of healthcare-associated infection.

All data collection for the ‘classic’ Safety Thermometer and the ‘next generation’ Safety Thermometers will therefore stop after March 2020. Plans for nationally-produced replacement data to support improvement drawn from routinely collected sources will be provided or signposted on the NHS England and NHS Improvement Patient Safety Measurement Unit webpage as soon as possible.

If you are having trouble saving your Safety Thermometer data, specifically if the save window is getting stuck on the ‘Preparing to send data to server’ message (as shown below) then the issue is probably the compatibility mode. This Guide is for Internet Explorer 9 - You can check which version of IE you have using the guide on this page.

Internet Explorer 9


  • Go to the Tools option on your Internet Explorer menu bar (it may look like a cog as shown below). Select the F12 developer tools option from the drop-down menu.


  • This should now bring up the Developer Bar at the bottom of the window; you should then see the Browser Mode and Document Mode options on this new menu bar (as shown below). Please make sure that both options are set to Internet Explorer 9. If they are already set to 9 and you still cannot save then please change both browser mode and document mode to Internet Explorer 8.



  • Once this has been done please close the Developer Bar using the red x, the page should refresh and the issues you have been experiencing should have been fixed!

If you are still experiencing issues with the website please don’t hesitate to contact the Safety Thermometer team at This email address is being protected from spambots. You need JavaScript enabled to view it..