Watching “Are You Being Served” or “Monty Python’s Flying Circus,” I hear the British pronounce the word “my” as either “my” or “me.” As in:
“…a daring and heroic rescue in MY own particular idiom!” (my emphasis)
or
“…oh ME achin’ back!” (my emphasis)
Two questions:
Are there rules governing when to pronounce it as “me” or “my,” or is it just random? I’ll often hear the same speaker use both pronunciations, so I don’t think it’s a social class thing.
When written, is it spelled m-y, regardless of how it is to be pronounced?
It is dialectual. Several British and some variants of Irish use “me” where Standard English calls for “my.” I suspect that Captain Peacock, for example, never uses that pronunciation while Miss Brahms uses it a lot.
(Think of Long John Silver saying “Come here, me lad.”)
It may actually be a difference in pronunciation rather than a difference in word usage, but it is generally spelled “me” in any case.