7 The full resolution of the axle box problems could point the way for partnership working in future fault attribution and in the handling of abatements arising from non-availability of trains during an agreed replacement programme. Resolving matters in an amicable way also reduces the costs required to defend legal positions on each side, which could potentially be extensive. LUL has not yet incurred what it considers to be substantial legal costs since financial close of the PPPs - in 2003-04 LUL spent £1.5 million on internal and external legal costs relating to the PPP, excluding stand alone costs such as those relating to Tube Lines refinancing. Assuming five or six disputes run their course, LUL projects a spend of £2.75 million in 2004-05.