Maybe I've missed something but I was always under the impression thet Type 45 was not equiped with Harpoon nor torpedoes?
This article on Mer Et MArine states otherwise: surely a mistake?
Intended to replace the Type 42 Destroyer (class Manchester andSheffield), the T45 has been specially designed for air defense.Their main weapon system was the subject of a program in cooperation with France and Italy, who participated in its development as part of the Horizon program. In Britain, thePrincipal Anti Air Missile System (PAAMS) was christened Sea Viper. As the Franco-Italian frigates, it revolves around 32 Aster 30 and Aster 16 missiles 15 (six vertical launchers, Sylver A50). The arming of the buildings Daring class also includes eight Harpoon anti-ship missiles, a 114 mm turret, two Phalanx systems multitube,two 30 mm guns and four torpedo tubes for Sting Ray. Each ship can carry a helicopter.