I got one about three years ago from a stall beside TK Maxx in the city centre . The stall was actually closed but there was a contact number which I rang and I had the street sign I wanted within about five days delivered to my house by the man who made it, it was £60 if I remember correctly.
I don't know if the stall is still there , perhaps you could take a look or another forum member might know.
The black and white tiles weren't actually ceramic on the replica but I doubt anyone would know the difference.