Error on BBC Learning English
Look at this chart of phonetic symbols for English (RP type). It is a pop-up that appears if you go to the BBC World Service learning English site and click on Listen to the sounds of English. Do you notice what is wrong? Compare it with the correct chart found on that page itself. There are two discrepancies. One is that the MOUTH vowel is written as ɑʊ rather than aʊ, which is something that could perhaps even be defended as a preferable notation for the diphthong in question (though here it is unquestionably just a mistake). The other is a straightforward error: ɭ (retroflex lateral) instead of l (alveolar lateral). Thanks to Ludwig Tan for this.
Professor Wells’s Phonetic Blog is probably a little too advanced for most undergraduate students of phonetics, but it is always fascinating.