W
web
website
web page
Just 'page' is preferred, unless the context makes this usage unclear. Do not use 'webpage'.
wellbeing
Not capitalised when referring to a person's wellbeing. Not 'well-being'.
Wellbeing team
Capitalise 'Wellbeing' when it is the name of the University team.
Wellbeing drop-in
widening participation
WiFi
while
Do not use 'whilst'