A useful website which gives exemplar assignments of how work experience can support GCSEs in Business and Scienceis www.mwew.com/.
Here is a guide to all centres offering BTEC courses (552kb 6 page pdf) on how to navigate the Edexcel website.
Here are some Teacher Guidance Notes (225kb 2 page pdf) for GCSE Leisure & Tourism.
Some useful resources are available from the Key Stage 4 Flexibility website and from the Vocational Learning website.
Also available is a CDROM from the Learning and Skills Development Agency called "Resources for Courses" which is very informative and available free.
You may also be interested in reading the following case studies:
This is a list of resources and supported materials produces by the DfES for work-related and vocational courses at Key Stage 4 (432kb 30 page pdf).