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"It's not a silver bullet," Professor Higgins said, "and would require significant consultation about if, where, how and why we'd implement it".

The Reform UK leader said removing the two-child benefit cap, which would cost an estimated £3.5bn, was "not a silver bullet" but would help families.

Sir Keir told GB News the return hubs would not be a "silver bullet" for halting small boats crossing the English Channel.

A proposed trial to install a waste needle bin in Belfast city centre is not a "silver bullet" but one step to dealing with drugs issues in the city, a councillor has said.

Privacy campaign group Big Brother Watch says age check technology "shouldn't be seen as a silver bullet solution".