"Most who try writing with both hands simultaneously end up with an illegible scrawl."

simultaneous /ˌsɪm.əlˈteɪ.ni.əs/ =BrE

simultaneous /samltenis,s/=AmE

missile /msl/=AmE

missile /ˈmɪs.aɪl/=BrE

direct /da ɪˈrekt/=BrE

direct /drkt,da/= AmE

advertisement/ədˈvɜː.tɪs.mənt/=BrE /ˈęd.vɝː.taɪz.mənt/=AmE

Do we have a rule where vowel sound in British version is different from American version when it comes to the pronunciation of the aforementioned words. Besides, I need few words that go with simultaneous, missile, direct and advertisement.

Thank you,