It's not clear from your post whether you're considering Archaeology with 'Media Studies' or with 'Media Production'. There's no such course at Winchester as 'Media Practise' (even if that horrid American spelling was acceptable - in British English 'practise' is a verb, 'practice' is the noun).
However the course leaflet for the Archeaology component states:
"We do not require any particular A levels and do not expect that you have an practical archaeological experience. However, if you have the opportunity to take part in some fieldwork or work on artefacts in a museum before commencing the course, then take it. What you should have is a strong interest in archaeology and archaeological methods – so do watch Time Team and other television programmes in archaeology."
http://www.winchester...flets/Archaeology.pdf
Leaflets for Media Production
http://www.winchester...edia%20Production.pdf
and Media Studies
http://www.winchester...s/Media%20Studies.pdf
Chris