To help you in being able to self-rate, the Export Control Organisation (ECO) provides two online search tools and also a regular programme of training seminars in how to 'rate' your goods for export control purposes.
Online Search Tools
You can use either the Control List Classification Search Tool (on the SPIRE database) or the Goods Checker database to aid searching the UK Strategic Export Control Lists by using relevant keywords.
Control List Classification Search Tool
This tool is designed to help you search on previous 'rating' assessments made by the ECO's Technical Assessment Unit.
Goods Checker Database Tool
The Goods Checker database is designed to help you do key word searches on the specific wording included in the UK Strategic Export Control Lists. It can be helpful in identifying the definitions as referenced in the Control Lists.