Interserve

First Security is the largest of three specialist security companies that are part of Interserve, the services, maintenance and building group.

Interserve creates buildings and other structures for clients in the public and private sectors. It maintains many different types of buildings, the operational systems that support them and a range of plant and equipment in specialist fields. And it co-ordinates a host of background services for its clients to keep them running smoothly and efficiently while they concentrate on their core business.

Interserve's income is £1.5 billion and the group employs 26,000 people worldwide.

Click here to be redirected to the Interserve website.