London-based Spencer Ogden placed fifth with average international sales growth of 237% over the past two years on the list compiled by Oxford research firm Fast Track known as the Sunday Times International Track 200.
The compilers said Spencer Ogden, whose clients include “the likes of GE, Siemens and Shell”, had posted international sales worth $26 million in 2012.
It said US shale, Venezuela gas power and nuclear power in Finland were the three key growth markets last year for the company.
Spencer
