hi simon,
i have an amplified indoor aerial,
cost me �19-99, works fine with my freeview box.
as for freeview boxes there is a great variety
out there, if you pay around �30-40 you should be fine, but think about what connections
you need on the back of your box,
some only have 1 scart socket whitch is ok for the most basic set up, but if you need to connect a video or dvd recorder you will
need 2 scart inputs, also if you want to
connect to your hi-fi system, for better sound quality you will need one with phono outputs..
good luck.