I’ve been reading about banana imports - as you do!
The UK imports around $600m of bananas each year (2020 numbers) mostly from Colombia, Costa Rica, Dominican Republic, Ecuador, and Belize. As of 5 May 2022 the UK has only fully ratified post-Brexit trade agreements with Costa Rica and Ecuador. There is currently a bridging mechanism with Colombia and only a provisional application for the Dominican Republic and Belize both part of the CARIFORUM trade bloc.
So again, as with Turkish olive oil, any tariffs are what the UK government has agreed to or is still negotiating.
On a statistical note, “Prime Minister Boris Johnson's speech on housing” was approx 5300 words long only 2000 of which were about housing. The full fact checkers will have a field day with the claims made.
Since the Tories came to power we have has no less than six Secretaries of State responsible for housing under various rejigged departmental titles and eleven Ministers of State for Housing. No wonder housing policy is a mess.