Here are some more street name signs; all different.
Row 1: St John's Way, N19, used to be St John's Road (what was the point of THAT?!); the top end of St, Pancras Way, NW1, used to be known as Kings Road; a painted sign for Southampton Road, NW5, showing the use of red paint for the postcode; Aquinas Street, SE1, shows where the lettering was once painted in black and then over-painted in white.
Row 2: Both the Willoughby Road and Rosslyn Mews signs show how substitute tiles were used for various letters (Qs for Os and number tiles for word spaces). Perhaps they just ran out of the correct letter tiles? Intriguing. For more of these see http://rodcorp.typepad.com/rodcorp/2004/07/london_street_s.html; Moxon St, High Barnet, EN5, shows that years ago there were no postcodes being used at all and one can assume that at the time this was put up it was the only Moxon Street in the general area, indeed there are only five streets by that name in Great Britain even now; one of two signs here for Bloomsbury Square, WC1, this one has a partially rusty surround and fixings but I cannot decide whether it is an old sign (maybe 1920s or 30s) or a new sign has been put into an old mounting.
Row3: Wild Court, WC2, shows two different hand-painted signs, one with 'Borough of Holborn' in a sans typeface and the other with a serif face which makes it interesting for us now but I can never fathom why back then they didn't just accurately touch-up what was there rather than paint a new design almost over the top like a dodgy shadow; a hand-painted sign in Roupell St, SE1; a lovely metal sign in Hayles street, SE11, though I now wonder if it was blue enamel and has been painted over, so I must go and have a second look; a lovely cast metal sign for Bloomsbury Square, WC1.