If so rules need to be published pretty damn fast - for myself as I have said before only simple stuff i.e.
1) Budget allowed
2) Number of stocks allowed
3) U.K. market only or wherever?
4) Trading hours - does one need to advise sale or purchase at the time or can they be made during closed period at previous days last published bid, offer or maybe mid price? I would assume to take advantage of an intra day price the advice would have to be via a post within 15 minutes say?