Please see the ATT's policy on providing replies to members' queries which explains that the ATT does not currently have the resources to provide a technical advisory service, and can only take on those queries which bring to light anomalies in or problems with tax law or administration.
The Association of Taxation Technicians
1st Floor, Artillery House
11-19 Artillery Row
Phone: +44 (0)20 7340 0551 or 0844 251 0830
Fax: +44 (0)20 7340 0598