Traffic lights (College Town GU47)

Hello,
Lenses or whole unit (working/needs repair) please?
This is for novelty use but needs to be full size in order to be seen 25m away.
I could repair a broken one, use a shell of one, build one around some lenses - which are uneconomical to buy.
I imagine (wildly) that there is a pile of defective ones in a depot that a kind reader has access to. However, the unit just has to look like a set of traffic lights.
FYI I filled in a Brk Forest Borough council form about this enquiry and received no reply.
Ideas welcome?
Can you help with this request?
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