Activities involving biological agents are carried out in specially designed laboratories. These are described in COSHH as Containment Levels (CL). 

The requirements for the four different containment levels (CL1-4) are a combination of design, safety equipment, and working practices. The level of control increases in line with the CL number, so CL1 has the minimum level of control, while CL4 has the highest. CL3 laboratories are the highest-level containment laboratories in common use in the UK. 

We've supplied CL3 and other laboratories to many UK hospitals and life science facilities - visit our News Hub to read our case studies on projects with Imperial College London, the London School of Hygiene and Tropical Medicine (LSHTM), Aberystwyth University's innovation cluster - VetHub1 (shown in the image), and many more.