In spite of initial opposition of one of the partners, LUL's parent organisation, Transport for London, the parties are operating generally in a spirit of partnership. Most issues are resolved at working level, and while financial resolution can take some time, operational solutions are typically found quite quickly - see Case example 1: Fault attribution on page 32; Case example 2: Bad weather on page 34; and Case example 6 - Asset defects on page 46. A further example of a spirit of partnership is what happened following ultrasonic testing in July 2003 by Infraco SSL, which unearthed four rail flaws in a stretch of track. The parties agreed immediately to a one day Temporary Speed Restriction and a longer overnight possession (the track was shut down two hours ahead of time) on the evening after the defects were found to enable rectification. Operations resumed safely at normal speeds the next day, as soon as the repairs were completed. In the absence of the speed restriction, the route would have had to close, and without a longer overnight possession there would be a risk of an engineering overrun into morning operations and disruption to a greater number of passengers.