This Portsmouth company makes defence equipment, including air filtration units to protect ships from chemical, nuclear and biological attacks. It also supplies specialist packaging, water purification filters and engineering services to BAE Systems and the MoD. Established in 1929 as an air transport business, it is run by Simon Escott, 50, grandson of the founder. Expansion in the Middle East and contracts in Canada, India and Australia helped overseas sales hit £2.2m in 2015.

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Company details
Year2017
Rank27
CompanyPortsmouth Aviation
ActivityEngineering services provider
LocationPortsmouth
2-yr av intl sales growth pa97.04%
International sales £000s2,176
Total sales £000s26,730
Staff170
Founded1929
Websitewww.portav.co.uk

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* Supplied by company † Annualised figure