The firm opened in Toronto last year shortly after the UK voted to leave the European Union, with then MD Laurna Woods saying the firm wanted to "control our own destiny".
Woods, who is now CEO of the group, said today (13 June) the firm would also open a US office by the end of the summer.
She also said the company was hoping to make an investment in a small unnamed Canadian firm, saying: "I am flying to Canada at the end of the month to begin serious negotiations with a small but important agency there. We have been speaking for a few weeks but I’m keen to conclude negotiations quickly."
Of the UK's economic and political situation, she said: "We will not stand by and watch reckless politicians continue to sabotage the British economy and further damage our growth prospects. How can a wounded Prime Minister, who no longer seems have the support of the majority of Conservative Party members, hope to extract a good deal from Europe for the people and businesses of Britain?"
The firm now has three account handlers in Toronto, although the office's business is also serviced from abroad, with based full-time in the UK. It is projecting fee income of CAD$1m (£590,000) by the end of the year, working for clients including Discovery Channel, drug firm Merck and manufacturer Norbord.
The group as a whole has 130 staff and runs a student recruitment business and the agency Only Marketing, in addition to integrated brand Beattie itself.