Hello guys, I'm edward cullen and I am lives in the Cardiff, Wales. So recently I start a small business a in my town. Actually i open up a small mart and now I looking for the a security guard for my mart or shop what ever is it. Therefore I am searching for the best security companies in london so guys kindly suggested me some good security services that are providing package regarding cost and service. At-least one person can write one best company name in the comment section.