All in London.co.uk
A-Z of laundries and launderettes in London.
http://www.allinlondon.co.uk/directory/1261.php

Blossom & Browns
Upmarket launderers and drycleaners that even the Royals are willing to entrust their clothes to.
http://www.blossomandbrowne.demon.co.uk/

Johnsons Cleaners
The nations largest dry cleaner, with over 600 stores dotted around the country.
http://www.johnsonsdrycleaning.co.uk/
http://www.johnsonplc.com/
http://www.sketchley.co.uk/

Luggage Minder.com
A luggage storage and laundry service that will collect from and deliver to any central London address.
http://www.luggageminder.com/

Sketchley
A leading dry cleaning chain that is part of Johnsons Cleaners.
http://www.sketchley.co.uk/
http://www.johnsonsdrycleaning.co.uk/
http://www.johnsonplc.com/

Yell.com
Searchable index of launderettes nationwide.
http://www.yell.com/quickclicks/SP/L/LAUNDERETTES/