So, you have the Foundation Level book by Spillner already and you are searching for solutions to the practices at the end of each chapter (besides your own solutions)?
This is also good to see what changed in the new syllabus. So you could (perhaps) consider, that the new topics should have more attention?
imbus AG provides solutions for the practices. Conditions:
the solutions are old - they referrence to the Foundation Level syllabus from 2003
it is only available in German (but you can use an online translation service )