These signs are located at the bottom of the stairs to the eastbound platform at Clifton Down railway station in Bristol. The top sign, that obviously dates from the British Rail era, is the only time I've seen the name "City-Severn Line" used. All the other publicity, including the platform signs, refer to the railway between Bristol Temple Meads and Severn Beach as the Severn Beach Line.
The bottom sign is directing passengers headed for Bristol Zoo to walk along the eastbound platform and take the exit at the western end onto Whatley Road. The Zoo is about a ¾-mile walk from the station and so in times gone by, Clifton Down was the destination for many excursion trains.

Photo by Chris McKenna 06/12/2006.
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