IIRC they’ve said this before. The issue being that isn’t whether it’s possible or not, it’s whether the available cash is better spent on AESA and other upgrades for the rest of the fleet and/or more F-35Bs.
But if the6 can squeeze more money out of the Treasury, good luck to them.
https://www.janes.com/defence-news/n...-uk-parliament
Upgrade and retention of Tranche 1 Eurofighters ‘technically feasible', BAE Systems tells UK Parliament
There is no technical reason why the UK Royal Air Force (RAF) could not upgrade and retain its fleet of Tranche 1 Eurofighter Typhoon combat aircraft, BAE Systems told the country's parliamentary Defence Select Committee in January.
In a written response to the committee submitted on 23 January, the lead UK contractor in the Eurofighter consortium said that it would be “technically feasible” to bring the RAF's remaining 30 Tranche 1 jets up to a standard where they could be retained in service rather than retired in 2025, as currently planned.
“It is technically feasible to bring a Tranche 1 aircraft to the standard of a Tranche 2 or Tranche 3 aircraft. BAE Systems has previously provided data to the Ministry of Defence (MoD) that outlines the scope of structural and avionic modifications that would be required,” BAE Systems said, noting that it has not been asked to provide an assessment of the non-recurring design effort, or associated costs, to implement such an upgrade.
The assertion from BAE Systems that the Tranche 1 aircraft could be made viable for longer-term service came about 17 months after
Janes reported in September 2021 that the 30 remaining jets are to be retired – an average of nearly 60% of their airframe fatigue lives remaining. Of the 30 Tranche 1 jets that are currently in the inventory, 20 are operational with 10 in storage.