This excerpt taken from the RTRSY 20-F filed Mar 16, 2007.
SHARE OPTION PLANS
2.1 You will be eligible for membership of the Companys Save As You Earn Share Option Scheme and of any other all employee share option plan operated by the Company and approved by the Companys shareholders. Participation in such scheme and plans is, save as otherwise stipulated in their rules, at the sole discretion of the Board or the Remuneration Committee.
2.2 If you are relocated to a country outside the United Kingdom, you are entitled to participate in any equivalent scheme or plan operated by a Group Company in that country.