CastleKeep invests in security, defence and disaster recovery companies, worldwide.
CastleKeep's expertise covers the following sub-sectors:
| Cyber security | Counter-terrorism security |
| Airport / Port / Maritime Security | Infrastructure security |
| Oil / Gas / Energy security | CBRN* security |
| Health security | Environmental / Food security |
| Defence Platform security | Disaster Recovery / Crisis Management security |
*Chemical/Biological/Radiological/Nuclear
