Lida, the M&C Saatchi shop, picked up the retail marketing account in 2014 having won the CRM business the previous year.
It is understood that the digital account that M&C Saatchi holds will also be moving to Spark44.
The social media account handled by We Are Social was moved to Spark44 too.
Last week Land Rover launched a campaign on Instagram called "#Hibernot2016" encouraging people to make the most of the eight hours of daylight we have during winter.
Jaguar Land Rover declined to comment.