Paul Terry wrote:
In message , Ian Jelf
writes

What are those orange and yellow "target" like things one sometimes
(but not always) sees on the front nearside wing of London taxis?

It signifies they are part of Computercab. You can see them on the
changing pix at the top of http://www.computercab.co.uk

The bullseye is there because disabled people wishing to flag down a taxi in
which they can use their Taxicard need a taxi which is on Comcab.