Ok, so my wife has an old bike in town that she uses to get from Liverpool St to the city (she works in part of a university not 'the city'.)
She hates her saddle and wants an old saddle she has fitting, two bolts (and snipping the wire lock that holds in place cos it has seized) 10 mins max I reckon but I am not in London.
Yesterday - Evans, yeah just bring it in and we will do it while you wait.
Today - Evans, no we cant do it we are too busy, no you cant book it in as it is too small a job...
Any suggestions other than don't use Evans!