Have to agree with blueloo on the matter of the dreaded ‘thuh’.
The (not just Speedbird) ‘thuh’ grates with me too. If they could hear what utter tossers they sound to the rest of ‘mere us’, I’m sure they’d drop it poste haste.
Hate to say it on this hallowed day when we’re all thanking the Poms for saving democracy etc, (and I do, quite sincerely), but the offenders seem almost always to be a ‘certain type of Englishman’ who’d probably consider themselves of the errrr… ‘officer class’ – to judge by ‘thuh’ accents at least.
When I head someone saying it, I find myself saying “‘Thuh’ London, this is…”