Confidential Private Investigations 

At Line of Inquiry our job is to provide the information requested as quickly as possible, no questions asked.

Our process involves a strict revision and cross-checking of the material we gather together before a final report is presented to our client. If the information is out there, no matter how old or how well hidden, we’ll find it.

We will accept any form of inquiry unless we are not certain we can deliver on our client’s expectations. If this is the case, we’ll let them know in advance and they will not be charged.

All communications between us and our clients are not recorded, encrypted and conducted in the strictest of confidence.

Let's Build Something :

Want To Get In Touch? Send us a message, call us or make an appointment to visit office.

Clients are welcome to visit us in our office. Please make an appointment 24 hours in advance. We have enough space for social distancing.





London (Head Office)

5 Chancery Lane, London WC2A,1LG, UK
We are open 24x7, 7 days a week, including public holidays)

Phone :

+44 800 1 939 333

0800 1 939 333


+44 800 1 935 777

0800 1 935 777

Email :

Switzerland Office : 

Line of Inquiry VIA dei Pioppi, 10 (1st Floor)
6616, Losone, Switzerland

International Free Phone / Toll Free : +44 800 1 935 777

Europe/Switzerland/Dubai UAE/USA- Worldwide Free Phone

Email : 




Translate »