Complex sentence: Payforit a cross UK operator, mandated billing technology which is now on version 4 and is available from various mobile billing providers as an API, which with the version 4 release works across both web and mobile web (WAP) platforms.
Split into simpler sentences: Payforit a cross UK operator, mandated billing technology is now on version 4 and is available from various mobile billing providers as an API. With the version 4 release, Payforit works across both web and mobile web (WAP) platforms.