Sentry Private Investigators is an established private detective agency operating across the Midlands, East of England and London. SPI's range of confidential investigation services including surveillance operations, UK tracing agent services and TSCM bug sweeps are offered in support of both private individuals and businesses entities in need of discreet, factual based evidence. With access to a trusted network of highly experienced and local private investigators, we tailor our services to the requirements of each investigation on a case by case basis. SPI are equipped with advanced technology and utilise specialist techniques in order to maximise investigative efficiency. SPI hold full membership with both the ABI and IPI.