Think this was made up by the sign-writer.
Looks like it's based on Gill Sans Medium.
Are there any sans-serifs which also use this style of W?
Also note the unusual & Ampersand.
Typophile
Similar to Gill Sans Medium but with unusual W (made from two V's); ID Help?
Something inbetween Gill and Eras:
http://www.identifont.com/show?6CK
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