Inflexion, which is an investor in tour operator Scott Dunn, also supported a buy out of On the Beach in 2013.
Reed & Mackay, which focuses on law firms, insurance companies, finance houses and the energy sector, managed almost 600,000 client travel transactions in the year to March.
It has seen its client base grow by more than 68% to nearly 500 since ECI invested, alongside Livingbridge in April 2011.
It now has offices in Scotland, the US and the UAE.
Reed & Mackay’s total transaction value passed £200 million for the first time in 2014 and is on track to reach almost £250 million this year.
