Many companies have already done that to comply with the Security Industry Business Act 2015 that came into effect on March 4 last year.

Royal Thai Police (RTP) adviser General Suwira Songmetta said 70 companies in Bangkok covering 6,800 employees had registered while the nationwide figures stood at 1,500 and 183,000.

He said the new law stipulated that the owners of security company conducting security services without permission could be jailed for up to one year and fined Bt20,000, or both.

He said unregistered security guards could be jailed for up to three months and fined Bt5,000, or both.