The plan was for LO to have their 172s in service by the end of 2008, LO to send their 150s to FGW and FGW to return all the subleased Northern 142s. However, as this didn't happen it mean Northern had to take on the only spare DMUs - which were 3x180s. Then when the LO 150s were released FGW released subsequently their ATW subleased units first and kept the subleased Northern units (which they plan to release when they get LM 150s) which mean Northern's 180 subleased was extended, extended again and again and again. Originally Northern were only due to have 180s until May 2009 and EC were then due to start refurbishing them and doing staff training on them.