The High Court has ruled that a judicial review against Bristol Rovers' plans for a new stadium can proceed.
The legal action is being brought by campaigners who are opposed to a new supermarket being built on the site of their existing ground in Horfield.
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The major party leaders' campaigns for the General Election will remain suspended on Wednesday following the Manchester terror attack.
The threat level has been raised to critical by MI5's Counter-Terrorism Analysis Centre.
Prime Minister Theresa May announced the decision from Downing Street.