Offers fire testing, consultancy, research, and safety engineering. UK and Hong Kong based. Chiltern International Fire and Chiltern Dynamics, Proving the performance of buildings and their components, eg fire, thermal and security. Chiltern International Fire and Chiltern Dynamics, as part of the TTL Chiltern Group, have more than 70 years' experience in providing practical solutions in the field of testing and consultancy for the construction industry. We are renowned for our specialist expertise in doors, windows and fire-rated products and our ability to help our clients make informed decisions.