LONDON — Keir Starmer has a plan to bring down food prices. Businesses aren’t buying it. “We’re in a world where there’s massive conflict [and] great uncertainty,” the U.K. prime minister told the BBC during a campaign visit to the North West last week. “I strongly believe the U.K.’s best interests are in a stronger, closer relationship with Europe.” By striking a deal with Brussels to align with EU animal and plant health rules, the government will “make trade easier so there are less burdens