More than 1,000 people signed a petition opposing plans to build a new convenience store in Shipdham, near Dereham.
The concerns centre around the impact a new store could have on the village post office, which is described as a lifeline to many residents in Shipdham and neighbouring villages.
Despite the level of opposition, members of Breckland Council's planning committee voted in favour of granting the proposals planning permission.
Councillors were told the issue of competition cannot be taken into account in decision-making as it is not a material consideration in planning law.
Those supporting the development argue that it would tidy up an eyesore site, support existing businesses and give shoppers more choice.
Here, in this video, some of those who signed the petition explain why there is such strong opposition to the plans.
Speaking are Shipdham resident Geoff Hinchliffe, Breckland district councillor Lynda Turner and Shipdham postmaster Lax Purewall.
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