There's a heartening number of old shop signs that have been uncovered - and kept by new businesses. This example is on Holloway Road, towards the Highbury end - more-or-less opposite that very grand Islington library. It apparently used to be a butcher's shop and is now one of those 'vintage' emporiums.
There aren't too many 01 numbers visible either - but here's one below off Oldhill Street in that enclave between Stoke Newington and Clapton (and there's an 081 also on a signboard of a Oldhill Street business which appears still to be trading). The 01 code for London was introduced from 1959, and the three letter area codes were phased out from the mid-60s. 01 was superseded by 071 and 081 in 1990. 0171 and 0181 came were introduced in 1995, and 020 five years later.
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