u/code-reviewer2

The "Gail's effect" is a phenomenon where the opening of a Gail's Bakery branch signals rapid gentrification and increasing property values in a UK neighborhood. It acts as an indicator of growing affluence, much like the "Waitrose effect", a similar, older term coined for attracting higher-income residents and wealthier, corporate tenants to an area.

Gail's opened five years ago. Waitrose has been there for fifteen. The Lexicon opened nearly ten years ago. The town centre may seem a more pleasant stroll on a Saturday afternoon but it has been a failure of an investment by every social and economic measure.