The largest security systems service activities companies in Bristol
Ranked by shareholders' funds, from 83 active companies in the BS postcode area.
"Largest" here means shareholders' funds — what the most recent balance sheet says the company is worth. It is the only measure of size filed by enough companies to rank on.
Companies that have never filed accounts cannot appear, however big they are. Figures are as filed at Companies House and can be a year or more old.