ITQ in West Midlands click on the "providers" tab and then "resources - training" - provides exercises for learning/practising the skills needed to enable achievement of a number of the ITQ units (some at level 1 or 2 and sometimes both).
Alison FREE essential skills training on-line (ITQ)
Institute of Customer Service this link displays a page that gives a list from which you can access a number of interesting facts/articles/case studies etc concerning customer service issues (Customer Service)
Andrew Gibbons Customer Service Top Tips etc (Customer Service)