Specialise Investigation LLP (SIS) is licensed by Spore Police Force, SIRD. SIS was founded by former senior Police investigator, Mr Tan Khoon Chye. Mr Tan was in the Spore Police Force (SPF) from 1970s to late 80s. During his time in SPF, he had experience in Gambling Suppression Branch and Anti-Vice Branch.

Due to his passion for investigation, Mr Tan went into Private investigation and had formed an elite team of investigators. Our investigators are specially selected and trained; they are from the SAF or SPF and had vast experience in covert surveillance and investigation works. Through many years of working relationship, our investigation team is able to conduct the investigation for our client professionally and with integrity.