If they are worried after Brexit, the EU door is still open, Big.

The path for Great Britain to rejoin the European Union exists, although the process is complicated by existing conditions. Michel Barnier, the former EU chief negotiator, stated that rejoining would not automatically grant the individual freedoms previously guaranteed to the UK. He clarified that the core conditions of the EU's single internal market are non-negotiable, meaning Great Britain cannot choose specific aspects of membership separately. However, there is an avenue for negotiating the bilateral restoration of free movement between British and EU citizens. Furthermore, other opportunities exist to strengthen ties without pursuing full membership, with a full return being set for 2029 according to one source. Think tanks and civil society organizations suggest that rejoining could be achievable within a single parliamentary cycle due to existing regulatory alignment.

The narrative presents a tension between the desire for re-entry and the structural rigidity of the EU framework. The core dynamic is that while the external pathway to membership might simplify compared to the Brexit negotiation, the internal substance remains constrained by pre-existing obligations. Barnier's assertion that the single market conditions are "non-negotiable" shifts the focus from a simple procedural transaction to a deep structural compatibility challenge. This implies that any potential rejoining is less about negotiating entry terms and more about reconciling existing divergent interests within the established system. The fact that entities like think tanks conclude a return is feasible within a parliamentary cycle suggests that momentum can be generated by aligning institutional structures rather than starting entirely from scratch. The framework suggests that sovereignty, in this context, is not absolute but must operate within defined parameters. The contrast between the complexity of exiting (Brexit) and the potential simplicity of rejoining highlights how the very process of leaving imposes inertia on subsequent possibilities. What assumptions about the future relationship do these procedural details mask regarding the true political will required to manage divergent regulatory systems?