conservative RP TRAP, glad, /æ/
TRAP, glad, /a/
This provides good examples of how to sound British /æ/ and /a/. Koreans have historically and almost unanimously been more partial to the American accent; it takes me way too long to recognize that /a/ is a different phoneme from /ɑ/.
Now, the chart stirs up another curious question for me. I read at Wikipedia, in English phonetic history, that /a/—not the /a/ above, an open front unrounded vowel, but the open central unrounded vowel—is the origin of both /æ/ and /ɑ/, and that this /a/ changed progressively into the /a/ above, and next into /æ/. Then why does BL call /æ/ 'conservative' compared with /a/ in RP?