[Flubflow]

The spam filtering on my email with i-websolutions hosting account is superb. It detects spam extremely well and adds "{spam?}" to the subject line so even in crappy email clients like outlook express you can filter those out (delete from server) if you wish.
I have email accounts with other ISPs that use similar spam filtering but they only put extra headers in spam emails rather than in the subject line which means you can't filter it out with Outlook Express but you probably could with other email clients.

NTL on the otherhand do sweet FA to reduce the spam problem. It is particularly distressing when the spam is complete filth and especially when it winds up in the email account of a minor. The technology is there to massively reduce the problem and it is realtively cheap to do it so why aren't NTL using it?