| Cyber and Electro Magnetic Activities Effects Group (CEMA Effects Gp) | |
|---|---|
 Cap badge of the Royal Corps of Signals | |
| Active | from 2022 |
| Country |  United Kingdom |
| Branch |  British Army |
| Role | Cyber and Electronic intelligence |
| Size | Group |
| Part of | Field Army Troops |
| Group HQ | Marlborough Lines, Andover |
| Website | CEMA Effects Group |
The Cyber and Electro Magnetic Activities Effects Group (CEMA Effects Group) is a combat support formation of the British Army formed in 2024. The group brings together three specialist regiments of the Royal Corps of Signals under Commander Field Army.