Learn T-glottalization: /t/ can be replaced by a glottal stop /ʔ/ in some UK accents.
In some UK accents, /t/ may become a glottal stop /ʔ/ in certain positions (often before consonants or at word end).
Do not assume all British accents use it equally; style and region matter.
Is /t/ in a position where it is hard to release clearly (end of word, before consonant)? If yes (some UK accents), glottalization may occur.
💡 Examples: bottle, butter, at home. British vs US note: glottal /t/ is more associated with many UK accents. In most US accents, /t/ in similar positions more often becomes a flap /ɾ/ (between vowels) or stays /t/. Choose a model accent and keep it consistent.
✓butter → /ˈbʌʔə/ (possible in some UK accents)
✗butter → /ˈbʌtər/ (forced rhotic/US-like)
A glottal stop can replace /t/ in informal speech in some UK varieties.
✓at home → /əʔ ˈhəʊm/ (possible)
Word-final /t/ before a consonant may glottalize.
✓bottle → /ˈbɒʔəl/ (possible)
A very common example in several UK accents.