The sounds of Italian differ from British English in several ways, including differences in pronunciation, rhythm, and intonation.

Pronunciation: Italian has a number of sounds that are not found in English, including the "gl" sound represented by the letter "gl" and the "gn" sound represented by the letter "gn". Additionally, Italian vowels are pronounced more distinctly and with longer durations than English vowels.

Rhythm: Italian has a more rhythmic and musical quality to its speech compared to English. This is due to the greater emphasis on the syllables in Italian and the longer vowel sounds.

Intonation: The intonation patterns in Italian are also different from English. In Italian, the emphasis and intonation tend to be placed more on the last syllable of a word, whereas in English, the stress can fall on any syllable. This can make it difficult for Italian speakers to achieve the correct intonation and stress patterns in English.

In general, Italian sounds are produced with more movement of the mouth and tongue, and with a greater emphasis on the individual syllables in words. Italian speakers may need to practice using different speech organs and sounds in order to produce the sounds of English correctly.

In Italian, the jaw and lips play an important role in producing several sounds, particularly the vowel sounds. Italian vowels are pronounced with the jaw relatively open and the lips relaxed, which contributes to the characteristic diphthong-like sound of Italian speech.

For example, the Italian vowel sound represented by the letter "a" is pronounced with a relatively open jaw and rounded lips, which creates a distinct diphthong-like sound that is different from the more monophthonic vowel sound represented by the letter "a" in English.

In addition, Italian consonants such as the letter "g" are pronounced with the jaw more open than in English, which contributes to the distinctive Italian sound. For example, the Italian "g" is pronounced with a more open jaw position than the English "g", creating a different sound.

Overall, the use of the jaw and lips in Italian speech contributes to the unique rhythm and melody of the language, and sets it apart from other languages, including English.