GB Airways HAVE scheduled the B737-800 Excel wet lease, (last year it was a BA Mainline A320, G-BUSJ) to op. to Malta, amongst other Eastern Med destinations, and the CE seating is 2+2 middle seat blocked. Hope you are in ROW1 and not stuck in the 28-29" seat pitch!!
At least they are offering this... A few years ago they op. European aviation 737-200 and didn't offer a club cabin; they just refunded the fare diff!!