A protest was held in Maidenhead High Street on Saturday over plans to turn the Golden Harp pub in Furze Platt into a Tesco Express.
More than 200 signatures were added to a petition against the changes for the building on the junction of Furze Platt Road and Courthouse Road.
Protesters carried banners and placards and were joined by Maidenhead Concert Band.
A public meeting about the plans is due to be held at St Piran's School in Gringer Hill on Tuesday.
Join the 'Save the Harp' group on Facebook to follow the campaign.
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