Great Western Railway's 1C15 1300 London Paddington to Bristol Temple Meads service stands at Bath Spa on 23rd January 2017. Power car 43025 leads the formation with 43181 at the rear. The banner repeater for signal B6 shows that the signals itself (just beyond the railings) is displaying a proceed aspect. Such banner repeaters are provided with the view of a signal may be restricted - I am guessing at Bath Spa it may serve this purpose mainly for the station staff dispatching trains, who may not be able to see the actual signal when a train is standing at the western end of the platform.
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