This Guildford firm’s software helps prevent fraud by securing credit card data as it is keyed in over the phone. International customers include the Foreign and Commonwealth Office. Overseas sales hit £2.3m last year. The company is run by Tim Critchley, 42.

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Company details
Year2015
Rank40
CompanySemafone
ActivityPayment software developer
LocationGuildford
2 yr av intl sales growth % pa64.49
International sales £000s*2,289
Total sales £000s*5,064
Staff47
Founded2009
Websitewww.semafone.com

If applicable:

* Supplied by company † Annualised figure