German languages website by Heidi Behrens. Free after 4 and at weekends. to use during the day £50 per year. Loads of ppts and games covering all sorts of topics for both KS3 and KS4
From the website:
"More than 20.000 grammar and vocabulary exercises
A more than 800-hour interactive online German course
Our exercises are structured according to the European Framework of Reference for Languages"