rescue.org (https://www.rescue.org/uk/article/why-uk-government-should-r... section 5) reports GBP 140m so far, GBP 120m on up front costs along with The Times reporting a further payment of GBP 20m.

The Migration Observatory (https://migrationobservatory.ox.ac.uk/resources/commentaries... costs section) also cites the GBP 120m figure, along with a citation of Select committee evidence that there will be further per-person costs to HMG.