Cheapest way to call UK Mobile Number?

What's the cheapest option to call UK Mobile Number from Pakistan?

cheapest option i know is VOIP phone www.lowratevoip.com but for this option you'll need a PC with Internet connection for more details Lowratevoip

other option that like very much is steal someones/cousins mobile balance by balance sharing and then make calls isn't it cheapest way ?

^ I said cheapest way not cheating way. Thanks anyway

Dun know about UK Mobile number

The cheapest way to call a UK Landline is Zong 8 Anay Package

have u tried calling cards e.g GT ...etc.

their rates are also good.