The deal grows Travel Counsellors' agent community to nearly 4,000 and creates a homeworking operation with total sales in the region of £1.5 billion.
Founded in 2014 by three travel entrepreneurs, including chief executive Flemming Friisdahl, TTAND support more than 1,700 independent travel sellers turning over approximately CAD $500 million (£270 million).
Friisdahl will continue to lead TTAND following the acquisition, while its consultants will – "over time" – migrate to Travel Counsellors systems.
TTAND becomes Travel Counsellors' third major acquisition in the past three years following deals for UK-based homeworking agency Holidaysplease and technology platform Planisto.
Canada, meanwhile, becomes the seventh international market in which Travel Counsellors operates.
In the year to 31 October, Travel Counsellors achieved £1.1 billion in total transactional value and earnings (ebitda) of more than £40 million.
The newly combined group expects in the next 12 months to achieve TTV of £1.5 billion and earnings of £50 million.
'More than the sum of its parts'
Travel Counsellors chief executive Steve Byrne said he had long been an admirer of TTAND's "strong entrepreneurial spirit, culture and leadership" and its "outstanding culture".
“This is a partnership where the combined company will become more than the sum of its parts. Both organisations have been built on strong values that put people, personalisation and entrepreneurial spirit first," said Byrne.
"TTAND’s established leadership team share our hunger to grow and continue to disrupt the leisure and corporate travel market through highly personal service and a relentless focus on the customer, powered by a continuous investment in market leading technology."
Friisdahl added: "I have always looked at Travel Counsellors as a leader when it comes to travel professionals that work remotely and flexibly, and I am very excited to be partnering with them for two very important reasons.
"Number one is the culture, it aligns very much with the TTAND culture, given it is all about our support team and our agent partners. The second reason is their commitment to being innovative and bringing the most effective technology tools to their community of travel experts.
"We cannot wait to bring some of the benefits of Travel Counsellors’ sector-leading technology and product to support our team in Canada."
The deal remains subject to regulatory approvals.