I believe, as always, Jet2 are looking after their customers.
it may be disappointing news but any customer who is due to pay the balance for a holiday from early June until June 23 knows that they will not now need to make the payment and the deposit will be returned. Happy customers.
Any holiday, that is already paid for departing after 17 May and up until 23 June, will be refunded - other competitor holiday company customers will still be expected to pay any outstanding balance up to 23 June whilst they await a decision from that Company.