Drivers are ASLEF not the RMT, although some are members of the RMT, the average working week for a Signaller in Powerbox / IECC / Manual box can be 60 hours, obvioulsy overtime, but the gaps have to be filled, lost count of the amount of 'staff' who have an interview, all hunky dory, do the school bit, then after about 4 weeks if training, leave the job, citing the hours, the stress, the rules and regs they have to know all the time, needing to make safety decisions almost instantly, most Signallers are on a salary of about £30k per year, the PSB's / ROCs where you cover hundreds of route miles, is obviously higher.