Applaud the reason for the changes, but I really don't like the way they've implemented this. Having to pay £20 just to contest a charge against you is <insert lots of colourful language> stupid. I won't dredge up the old arguments but anyone interested in them just has to read the
"IP does not identify a person" thread.
This is going to sound like a broken record, but the pirates are yet again getting the better deal. Think about it. I get a letter accusing me of downloading movies, I haven't', but I have to pay £20 to contest it. I'm either out of pocket, or branded a pirate because I didn't defend myself and risking further sanctions as the letters pile up.
Pirate downloads movies, gets a letter, no need to contest since he/she knows they're guilty, no need to pay £20 and no need to stop as it's just a letter. They'll wait until 3 or more have arrived and more sanctions before even considering stopping, or they'll switch how they download to avoid IP logging.