25 years man and boy, ive been doing shops lol
we have done them all over that time
all the major banks/building societies
smiths
curries
boots
all the opticians
tesco
sainsburies
iceland
argos
this list is endless...but pretty much every chain in a high street you can think of, we have done at some stage
a good 75% of them go national now...then they sub to regional companies....who quite often sub to local guys
the problem is that the money is so low, once down the food chain that its not worth putting your name to the type of clean that warrants the money!!
the other issue....is once you get a price you are ok to sub contract for....the comany that pays you...(or any of the others up the chain), gets out bid or goes bust!!!...this is a ton of hastle at your end!!! a real nightmare tbh
the other 25% of the chains who are not nationalaly covered....they pay such a low amount that its hard to make it pay....the best one is a new chain moves in to your town...they want the store to look great initially....and pay what you ask for regular work...but over the months the cut backs come...and the money drops
the only shops (IMO) worth doing are indipendantly owned ones....but whether they stay afloat in competition to the chains is another issue!!