Every year, we record the number of regulated procedures conducted on animals and report these to the Home Office.
A 'procedure' refers to anything done to an animal that may affect its wellbeing. This includes using an animal in a research project, and creating or breeding a genetically altered animal. A procedure may involve one intervention, such as a single injection, or could refer to sequence of events, such as inducing, treating and analysing a tumour.
We publish the numbers of procedures conducted at the Crick by species, type and severity. The data is presented in interactive charts below, with numbers and percentages available when you hover over each segment. The numbers are also available in tables.
The charts below show how many procedures involving each species were conducted at the Crick in 2019.
Type of procedure
The chart below shows how many procedures of each 'severity' level were conducted at the Crick in 2019. Severity is a measure of the impact of the procedure on the animal's health and wellbeing and is divided into five categories.
Data for previous years is given below, starting in 2017 when animal research was centralised into our purpose-built facility at the Crick.