I am the author of the Moodle LDAP & SIMS.net Documentation.
I have been help with support questions here
(sorry its not on moodle.org, hard to follow the forums here)
The integration so far with SIMS.net and Moodle is
Auto creation of student/staff account/courses.
Updating of course memberships.
SIMS.net timetables (including staff cover) available in Moodle.
Currently in development are the following features
auto creation of parent accounts (proof of concept works)
auto association of parent account with correct students (proof of concept works)
parental email block (authorised users with have the ability to email parents of either years/courses/classes) (currently in development)
All these components are release under GPL. Unfortunately i'm unable to given dedicated support, but try my best with other users to support these plugin over at edugeek.net.
The main issues people are facing is getting freetds up and running correctly.
I am looking to re-write the interface and use the SIMS.net business objects, but due to the lack of documentation i have on how to use the business objects i'm getting know where.
I will be trying to fulfil the Becta requirements along with the ability to write data back through the sims.net business objects.