the latest info I have heard is that G-ODSK is due back in service late next week or maybe early the week after.
But I have also heard from a line engineer that G-ODSK and G-ECAS are due to leave the fleet around easter time to be replaced by some more of the ex Easyjet aircraft which seems a bit strange as i though the 737-500s were due to be replaced first but they have changed now as they are some of the most reliable in the fleet.