A professional, SIA-licensed security guard in London typically costs between £18 and £35 per hour for a standard daytime contract, depending on the type of cover, the risk level of your site, and the length of your agreement. For 24/7 manned cover on a single site, businesses should budget from £5,500 to £8,500 per month. Read on for a full breakdown of what drives the price — and what you should expect to be included. What affects the cost of a security guard in London? Sec