 Finland was the first export order for the Blenheim and 18 Mark Is were delivered between 29 July 1937 and 27 July 1938.A licence to local produce the aircraft was granted in April 1938 but none of the 15 ordered from State Aircraft Factory were delivered before the Russian invasion.Twelve new Mark IVs were diverted from RAF production and these were followed by 12 former RAF Mark Is.