This document discusses mechanisms for supporting investment and renewal in urban cores. It examines approaches like interventions, landlord-led renewal, and business improvement districts. Specifically, it provides the example of Marylebone High Street in London where the Howard de Walden Estate led renewal through improving the mix of shops and adapting the building fabric. The document also notes that business improvement districts have been used in over 1,000 cities in the US and UK to improve small aspects of places and take care of maintenance through additional commercial rates. Finally, it emphasizes that innovation can come from individuals and that providing quality of life is important for a virtuous circle of investment and entrepreneurship in cities.