The total number of RP and GA consonants differ in one phoneme, it is the GA /W. The rest of the RP and GA inventory of consonant phonemes coincides.
The main peculiarities in the pronunciation of GA consonants concern the following phonemes.
/r/
This sound is one of the most characteristic of GA pronunciation. In its articulation the tip and blade of the tongue are turned upward, toward the hard palate, the tip pointing to the area immediately behind the alveolar ridge (it does not touch it) — a retroflex position. Its pronunciation is accompanied by some slight protrusion of the lips.
The sides of the tongue are in contact with the bicuspid and molar teeth, as for /n/ or /d/. /r/ is more sonorous in GA than in