![]() STM Security STM Security Group (UK) Ltd is a UK based security company and an experienced supplier of manned security solutions and customer service staff, fully supported by leading edge technology. | ![]() Carnell Group We’ve been helping to keep the UK’s highways network and transport infrastructure running safely and efficiently since 1992. | |
Founding Date | Founding Date 2005 | Founding Date 1992 |
Type | Type Private | Type Private |
Tags | ||
Locations | Locations London, GB HQ Northwood, GB Salford, GB | Locations Penkridge, GB HQ Leeds, GB Normanton, GB Preston, GB |
Employees | Employees 3731% increase | Employees 245 |
Financial | ||
Revenue (est.) | Revenue (est.) £24.5m (FY, 2018) | Revenue (est.) £48.2m (FY, 2018) |
Cost of goods | Cost of goods £19.6m (FY, 2018) | Cost of goods £39.6m (FY, 2018) |
Gross profit | Gross profit £4.9m (FY, 2018) | Gross profit £8.6m (FY, 2018) |
Net income | Net income £24.7k (FY, 2018) | Net income £3.5m (FY, 2018) |

We’ve been helping to keep the UK’s highways network and transport infrastructure running safely and efficiently since 1992.
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