Royal Navy HMS Astute fires a Tomahawk at a land target on the range
Royal Navy HMS Astute fires a Tomahawk at a land target on the range

Royal Navy to Upgrade Tomahawk Land Attack Missiles (TLAM) Stocks to Block V

The UK’s stock of Tomahawk Land Attack Missiles (TLAM) will be upgraded for Royal Navy submarines to ensure the weapon is even more effective against future threats. It will travel further than the previous Block IV iteration, maintaining a precision-strike capability unmatched in range and accuracy. It will also make the weapon less vulnerable to external threats, with modernised in-flight communication and target selection. In a £265 million contract DE&S negotiated with the US Government, the Astute class will be armed with an enhanced Block V standard missile capable of striking in-land targets at a range of up to 1,000 miles.

Ed Cutts, DE&S Director Weapons, said: “Not only will this Foreign Military Sale (FMS) sustain and improve a proven, crucial operational capability for any future conflicts, it will continue to ensure interoperability with our US allies and the follow-on support arrangements will sustain jobs for UK industry.”


Minister for Defence Procurement, Jeremy Quin, said: “This upgrade will equip our Astute-Class attack submarines with the one of the most lethal and precise long-range strike weapons. “Enhancing this cutting-edge missile system will ensure the UK can strike severe threats up to 1,000 miles away.”

Royal Navy Astute class nuclear-powered fleet submarines (SSNs).
Royal Navy Astute class nuclear-powered fleet submarines (SSNs).

At approximately 5.6m long and weighing 2200kg – a similar weight to a 4×4 car – the high sub-sonic Tomahawk was first introduced into UK service in 1998 and can hit in-land targets from the sea within minutes. A weapon of choice since then, it has been successfully deployed during operations in Afghanistan, Libya and Iraq. Tomahawk will be upgraded as part of an FMS negotiated by DE&S’ Weapons Operating Centre and will be active from July, with upgrades starting from 2024. Making use of existing US research and expertise, the contract will mean the UK continues to receive full access to the US Tomahawk programme, support package and upgrades.

The FMS also includes missile maintenance, recertification of existing missiles, spares, operational flight testing, software, hardware and training provisions. Existing maintenance and technical support already sustains jobs at BAE Systems, Babcock International and Lockheed Martin. The announcement builds on commitments made in the Defence Command Paper and Integrated Review, in addition to Royal Navy mission planning and weapon control system upgrades that will improve the performance of legacy Block IV missiles. Due to be operational in the mid-2020s, the upgraded Tomahawk will align with the delivery of the latest Astute submarines.

Tomahawks are loaded aboard  Royal Navy HMS Astute
Tomahawk Land Attack Missiles are loaded aboard Royal Navy HMS Astute

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