Upmarket: affluent or fancy
Wacky baccy: cannabis
Wally: silly person
War Cry: Salvation Army magazine
Wash: the washing machine
Water board: company supplying water to an area
White van man: typical working-class man who drives a small truck
WI: Women’s Institute, organisation of women in UK for social/cultural activity
Widow’s weeds: black clothes worn by a widow in mourning
Wrinklies: old people
Yellowbelly: native of Lincolnshire
Yob: a rude or aggressive youth or person
Yorkie bar: type of chocolate bar