Close Protection Agents, bodyguards, and private security contractors are all basically the same thing and just vary on the clients specific needs. A good example of this would be to highlight the difference between a close protection officer and a bodyguard.
A bodyguard would be the physical presence that would be seen in the public eye right beside their client which would be for example a high-profile celebrity. The bodyguard would make sure that their client is not harmed and that their client is not bothered by journalists and fans.
The client might want to go for dinner in the west end of London and without the close protection the media would take full advantage and actually make the client feel uncomfortable.
The role of the bodyguard in an incident like this would be to instruct the journalists and paparazzi that they can take photo’s but not get in the way of the client, basically let the client get on with it.
It could also be fans who surround the client and are ask for autographs and photo’s to be taken. Without a close protection officer present the fans would literally just take advantage of the situation.
A close protection officer would not really be seen in the public eye but would still have a similar role to the bodyguard in terms of keeping the client safe at all times.
There are also professional close protection drivers in London who are experts in transportation. They have high defensive and offensive driving skills and vast knowledge about the vehicles. A close protection London chauffeur would plan the routes of transportation and always make sure that they have a back-up plan.
So basically a bodyguard would work with a high-profile celebrity and a close protection officer would probably be looking after a politician.