RAFは増やすと言ってる
The Royal Air Force will continue to grow its Combat Air capacity over the next few years as we fully establish all seven operational Typhoon Squadrons
and grow the Lightning II Force, increasing the fleet size beyond the 48 aircraft that we have already ordered.
(Defence in a Competitive Age; Published 22 March 2021, Ministry of Defence
ttp://www.gov.uk/government/publications/defence-in-a-competitive-age/defence-in-a-competitive-age-accessible-version)

現在の英軍全体のオーダー48機が最終的に60〜80機になる予定
UK looking at '60 and then maybe up to 80' F-35B jets
　March 23, 2021　ukdj
ttp://ukdefencejournal.org.uk/uk-looking-at-60-maybe-up-to-around-80-f-35b-jets/