Yn gynharach eleni, cyhoeddais waith ymchwil a oedd yn edrych ar effaith ein polisïau cynllunio presennol ar ganol trefi.  Un o'r prif ganfyddiadau oedd twf a chwmpas y dulliau amgen o fanwerthu, gan gynnwys siopa ar gyrion y dref ac ar-lein, a'u heffaith ar ganol trefi.  Ymysg yr argymhellion oedd yr angen am fwy o eglurder mewn canllawiau cynllunio manwerthu.
Earlier this year, I published research which examined the effects of our current retail planning policies on town centres. One of the key findings was the growth and extent of alternative forms of retailing, including out of town and online shopping, and their impact on town centres. Amongst the recommendations was the need for improved clarity in retail planning guidance.