The Chemical, Biological, Radiological and Nuclear (CBRN) Delivery Team, part of the ISTAR Operating Centre, procures, supports and maintains a CBRN Protection capability for the three  Services, as specified by Head of Special Projects and CBRN Capability and in close coordination with Dstl Porton Down.

This covers chemical, biological and radiological detection, identification, decontamination and respiratory protection.

Reference

Doing Business with Defence Handbook. Edition 24 (2018).