Early Days But Be careful 

EG http://www.dial123.co.uk and  some others  still continue to show the old rates for calling 084/087 numbers. No reference to access and service charges.

Where as others like www.cheapcalls.co.uk/call-charges do.

Due to the changes calls to these type of numbers are not cheap anymore. EG Cheap calls charge 1p a minute access to call Australia Landline . Add say if your on Virgin Media Homephone 10.25p a minute access charge ,plus the fact your paying before your connected, is not good.

Other cheaper ways are available EG call a short code from most payg or contract phones and your pay 2p a minute.
www.dialacode.com no prepayment your supplier bills you,or takes it off your credit.