24 May 2015. Significant engineering took place in an around MK over the Bank Holiday weekend. The track, sleepers and ballast were all replaced on the up fast at MK and work was also carried out at Hanslope Junction and Weedon. Freightliner were entrusted with the MK works and locos 66513/522/525/530/552/557/560/953 and 70004 were used. Here celebrity 66522 is seen at MK with a trainload of fresh ballast which had worked in as the 6Y63 Crewe - Denbigh.