Students have a long history of protesting the introduction or rise of tuition fees. However, political parties do not often endorse their demands. Even the centre-left, which is known for its redistributive policies, does not necessarily ally itself with the student opposition to fees. In this article, the author focuses on the impact of social movement–organised labour alliances on the opposition of political parties to government policy. The author argues that such alliances have a unique impact on centre-left parties, especially in relation to non-labour issues. Two examples of this alliance are presented, emerging from the quite different political contexts of Germany and Turkey. In Germany, student movements failed to block the introduction of tuition fees in 2006. However, in 2008–2011, after students established a deeper alliance with organised labour, tuition fees were scrapped. In Turkey, student movements had been protesting tuition fees for a quarter of a century before an alliance with labour gained the support of social democrats in 2011. These case studies suggest that labour–movement alliances are effective in shifting social democratic politics in higher education policy because of labour’s experience and know-how in alliance building with centre-left parties and the student mobilisation’s potential to make tuition fees an electoral issue cross-cutting party allegiances. This finding suggests that scholars need to take the degree of engagement in opposition alliances into account, in addition to union density, in order to more accurately measure the political power of organised labour. This point has implications for analysing a variety of policy outcomes in policy areas exposed to permanent austerity measures.