Bristol is working towards climate neutrality by 2030. Its Climate City Contract, developed through extensive analysis and consultation, was recognised with the EU Mission Label. Support by funding from the EU Cities Mission, provided through the City Expert Support Facility (CESF) of NetZeroCities focused on reviewing plans, providing strategic advice, and using case studies to inform financing, governance, and investment planning. Bristol’s experience shows that setting ambitious goals is only the first step. Delivering them requires clear priorities, coordinated planning, and a practical approach to implementation.