5 out of 1,000 would be 0.5% FP rate, not 0.005%. Sloppy maths.
It is very easy to stay compliant using AMD, you just need the right tech. and the right people to operate it. OfCom acknowledge their awareness of the existence of tech. that can achieve a 0.5 FP rate in their September 2008 statement and things have moved on considerably since the acknowledgement of those claims.
My dialler averages 25,000 dials per day, 1 abandoned call and 0 false positives.
Compliance is not a problem and it would be hard to argue that there are any ethical issues with stats. like these. Do you have any reasons other than compliance and ethics for not believing any outbound operation should be using AMD?
Here is a link - http://stakeholders.ofcom.org.uk/consultations/persistent_misuse/statement/
Study the documentation there. If you find it to be ambiguous in any way, contact OfCom directly (details are on their site). When it comes to clarification of regulatory guidelines it is best to go direct to the source, rather than to an open forum, to determine correct action.