About us

JT Consultancy (NKT) Limited was established in 2013 to offer independent and impartial advice, consultancy and training on all aspects of fumigation and fumigation alternatives to all who may use or encounter fumigants. 

This includes, but is not limited to, fumigation and pest control contractors, ports, importers, exporters, customs, warehousing facilities, millers and local authorities. We offer services worldwide. 


Our clients in the UK include the British Pest Control Association, Rentokil Pest Control, Ecolab, London Gateway Port, Premier Foods, Drum Commodities Limited, Command Pest Control and Alpha Fumigation Services. Our worldwide clients include Container Co (New Zealand), Phosgard International (Australia), Nordiko Quarantine Systems (Australia) and Thyssenkrupp Companhia Siderúrgica do Atlântico (Brasil). 

JT Consultancy is the preferred fumigation training organisation for the British Pest Control Association. 

Our founder and senior consultant is Jon Trevenna.

​Jon has over 20-years’ experience in the fumigation industry preceded by 20-years’ experience in the agrochemical industry.


From 1996 until 2008 Jon was with Igrox Limited which, at the time, was the largest independent fumigation contractor in the UK. In 2004 Jon was appointed to the Igrox Board as Fumigation Director. 

He oversaw the difficult period of the phase-out of methyl bromide in the UK managing the successful introduction of alternative treatments such as phosphine, sulfuryl fluoride and heat. 





​JT Consultancy (NKT) Limited holds full public liability and professional indemnity insurance and is a member of the British Pest Control Association

Call Today: Telephone ++44 (0)1603 948488 Mobile ++44 (0)7539 899121
or email admin@fumigationconsultancy.com

Jon chaired the British Pest Control Association fumigation committee from 2006 until 2008.

In January 2009 Jon went to New Zealand to become General Manager of Genera Limited, the largest independent fumigation contractor in Australasia with operations in New Zealand, Australia, and Fiji. In New Zealand, the primary service provided by Genera was the fumigation of logs with methyl bromide or phosphine prior to export to, primarily, China and India.


Jon established JT Consultancy in 2013.

The company’s first commission was to establish a container fumigation service for NZL Group, a major logistics company with its headquarters in Auckland, New Zealand. This involved writing procedures (to ISO standards), dealing with local authorities to obtain the required resource consents, sourcing suppliers and training new staff. This was accomplished in six-months and NZL Biosecurity became the first fumigation contractor at the Port of Tauranga to utilise recapture equipment for methyl bromide.

JT Consultancy holds full public liability and professional indemnity insurance and is a member of the British Pest Control Association.