422 companies hold a Home Office licence for the Skilled Worker visa and have one of these words in their registered name: security. 2 of them have advertised a job we checked, and those come first below.
A licence is permission to sponsor, not a promise to sponsor you. It means the company is allowed to, not that they will for any particular job. Nobody may charge you for a certificate of sponsorship.
That is 100 of 422, not the whole group. Seen hiring means we have matched a real advert to that company and checked the link ourselves. On the register means the licence is real and we have not yet watched them advertise.
The Home Office register says who holds a licence. It does not say what a company does. So this group is every licensed sponsor whose own registered name holds one of these words: security. Matched whole, never on part of a word. It is the only honest way to sort the register by trade, and it means a company that does this work under a name that does not say so is not here.