The biggest difference between this type of English and others is that vowel length depends on the phonetic context. When vowels, except for /ɪ, ʌ/, are in an open syllable or followed by /v, ð, z/ or by /r/ (Wells 1986: 400) they tend to be longer. In other contexts they are short. This means, for example, that the FOOT and GOOSE sets have the same vowel, a centralized /ʉ/.
One characteristic difference between Scottish English and other varieties of English is the pronunciation of MOUTH. Words like house, about, round are pronounced /ʉ/ instead of /aʊ/.