Crickhowell pub conversion plan sparks protest
More than 150 people turned out to object to plans to turn a historical Powys pub into a chain store.
Punch Taverns has lodged a planning application to turn The Corn Exchange in Crickhowell High Street into a shop, with a national retailer interested.
Campaigners say a mini-supermarket, open from 07:00 to 23:00 GMT, would "dramatically" affect the town's independent shops.
Dozens demonstrated against the plan on Friday.
Locals say a national chain could undercut family-run butchers, bakers and existing convenience stores and change the character of the town centre.
More than 1,300 have signed an online petition against the application.
Emma Corfield-Walters, from the Totally Locally Crickhowell Campaign said: "Crickhowell boasts one of the few independent High Streets in Wales, it's one of the towns unique selling points."