I think it's the cold I remember more than anything. Freezing when you arrived, freezing all day, ridiculously freezing on the rugby pitch / gym, and then... the joy of an arctic changing room in which to shiver, secure in the knowledge that some **** would flick you with a towel and raise a weal like a buboe on your bottom.
And the most you had to look forward to at night was boiled mince and Coronation Street.