F-35B Lightning II UK fleet
UK (operation); USA (manufacturing by Lockheed Martin) · 2006 (UK commitment) - 2025 (all 48 initial aircraft received, FOC for Carrier Strike expected) · £11 billion (spent so far); £57 billion (estimated total program cost by NAO)
The judgement call
Account-gated at launchThe F-35B is a cornerstone of the UK's carrier strike capability, enabling operations from both land and sea. - The program has faced significant cost increases and delays, leading to scrutiny from parliamentary committees. - The UK is a Tier 1 partner in the F-35 Joint Strike Fighter program, contributing to its development and manufacturing.
Key engineering challenges
Integrating the F-35B with the Queen Elizabeth-class aircraft carriers. - Managing the complex global supply chain and maintenance for a highly advanced aircraft. - Addressing software development and upgrade challenges. - Ensuring sufficient operational availability and pilot training.
Project facts
- Client / owner
- Royal Air Force (RAF) / Royal Navy / UK Ministry of Defence
- Lead contractor
- Lockheed Martin (prime contractor); BAE Systems (Tier 1 partner)
- Lead designers
- Lockheed Martin
- Project type
- new build
- Scale
- 48 F-35B aircraft received (initial order); plans for 138 aircraft in total; stealthy, multi-role attack aircraft with short takeoff/vertical landing (STOVL) capability.
- Disciplines
- Aeronautical engineering; stealth technology; avionics; systems integration; software engineering; naval aviation
- Standards & frameworks
- NATO standards; Joint Strike Fighter program requirements.
Sources: F35.com: United Kingdom (https://www.f35.com/f35/global-enterprise/united-kingdom.html) - RAF: F-35B Lightning (https://www.raf.mod.uk/aircraft/current-aircraft/lightning-f35b/) - Navy Lookout: UK F-35 fleet stretched by combat operations and upgrade delays (https://www.navylookout.com/uk-f-35-fleet-stretched-by-combat-operations-and-upgrade-delays/) - BBC News: Delays and shortages in UK's F-35 jet fleet, watchdog says (https://www.bbc.com/news/articles/cy0wdyxpqvro)