• twenty vowels
  • seven short vowels: /ɪ/ /ʊ/ /ʌ/ /ɒ/ /ə/ /e/ /æ/
  • five long vowels: /iː/ /uː/ /ɑː/ /ɔː/ /ɜː/
  • eight diphthongs (double vowel sounds): /ɪə/ /ʊə/ /aɪ/ /ɔɪ/ /əʊ/ /eə/ /aʊ/ /eɪ/
• twenty-four consonants
  • eight voiceless consonants: /p/ /t/ /tʃ/ /k/ /f/ /θ/ /s/ /ʃ/
  • eight voiced consonants: /b/ /d/ /dʒ/ /g/ /v/ /ð/ /z/ /ʒ/
  • eight other consonants: /m/ /n/ /ŋ/ /h/ /l/ /r/ /w/ /j/

http://www.bbc.co.uk/worldservice/learningenglish/grammar/pron/sounds/