On 26 and 27 April 2017 a joint Strands 3 & 6 workshop on Sociolinguistic and cognitive perspectives on bilingualism took place in Edinburgh, where each strand made a presentation. We welcomed Professor Li Wei from UCL as the guest speaker and he provided new insights from the British Academy project on bilingualism and cognition. In addition, there were short reports from collaborators in the Basque Country and Sweden.