Guest editorial: Debates on social movements and trade unionism in Europe. New forms of interaction and transformative identities in work and society.

"The Tail that Wags the Dog: Lessons from London's Independent Trade Unions for Trade Union Renewal" is a contribution that points to the lack of risk taking within established unions and a tendency to focus on partnerships and more institutionalized approaches to relations with employers. Recent changes in European trade unionism: new trade union cleavages, trade union renewal,... New types of organization advocating for workers' rights and working conditions are emerging in response to this new, neoliberal, economic context. The traditional tools of trade unions are less useful in the context of new forms of work, while the bureaucratization of these unions and their lack of agility in the face of rapidly changing labor markets has also made it harder for them to effectively engage the workers represented by these new groups, although this has been steadily changing and much depends on the original social orientation of the union ([24]). Conclusion and reflection: appreciating the complexity of trade union-social movement rela... However, the actual interface and the issues between the social and economic dimensions of worker representation remain complex, and we are at a stage where we need to see that perhaps there is no clear fit between the community, social, and movement dimensions of workers as these can be porous and open to a range of different structures and hybrids ([33]; [37]). [Extracted from the article]