Download advice sheet on sight-reading.

Associated board aural requirements:
Grade 1
Grade 2
Grade 3
Recommended books: 'Aural Test Survival Book' - one for each grade:
http://www.musicroom.com/Search/gsearch.aspx?searchtext=aural+test+survival+book

Scale practice sheets:
Grades 1-3
Grades 4-5
Grade 6
Grade 7
Grade 8

Key Signature Sheet - click here.

Associated Board syllabus information:
http://www.abrsm.org/?page=exams/gradedMusicExams/latestSyllabuses.html

Trinity Guildhall syllabus information:
http://www.trinitycollege.co.uk/site/?id=1053

Visit: http://www.musictheory.net/index.html
for lots of useful music theory information and listening games.