Oxford Street looks very different from the upper deck of the bus. Looking ahead provides a fine view of the intensely busy street with snaking red buses, streams of shoppers and darting black cabs.

I normally identify my location on the street by familiar shop fronts I pass. On the upper deck I have a completely different perspective. To the right and left I see architecture I cannot recognise, posters I have never seen before and I look into the dark windows of offices of English Language Schools, Accountancy Additions, Kelly Services and Fairstaff Recruitment.