Welsh centre Jamie Roberts - facing Australia for the first time this summer due to injury - has scored the Lions' fourth try, taking a pass from replacement Conor Murray before galloping home.
Halfpenny makes it another seven points, and the Lions start to celebrate a series win.
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Hundreds of people took part in a protest march in Haverfordwest today over changes to hospital services.
A fairly cloudy day to come with a few scattered showers.
Ed Miliband paid his first visit to Wales as part of his General Election campaign, with a message that Labour would help working families.