The A4179 is a number used on several documents, including the DfT road lists, to describe Wembley Hill Road, Empire Way and Bridge Road in Wembley. The first two of these were at one time numbered B4565 whilst the latter was part of the A4089.
Recent documents and maps suggest that the A4179 number, if it ever did exist here, is now no more. Whereas Bridge Road remains part of the A4089 the remainder of the road became the A479 on opening of the new stadium in 2007, suggesting a misprint or misunderstanding with the A4179 number. Interestingly, the A479 is a duplicate number of a major road in south Wales, whilst the A4179 has, as far as is known, never been used elsewhere.