Hi Lisa,
City Centre wouldbe good for you, think about all those student accomodation areas!!!!!!!!!
Why not go to Council and ask if they tender out their home help services (the cleaningsideonly).My dad lives in Colwyn Bay and the council have so much work like this that they tender loads out to this company.
I doing this down here in Reading.
Cleenol lift, I pirchase from Euroffice.co.uk, you would be ok to get an account with them.
Get you steam cleaner form Argos, Ebay, Woolies, etc...
In Chester, go around the big offices like Manweb, if it's still there, ask if they have a staff noticeboard,if they do, ask them if they could put up some posters for you.
Let me think on about Chester, but let me know how far north you are going to go!!!!
Have a good day
Love
Denise