This is what Mr WS said at the beginning of this thread...
<<I dont have anything formal I can give you on this, and, as a trader myself, I do empathise with your concerns. The only guideline I can give you is the self-explanatory one, namely 'clients who are only interested in dealing on prices which are not completely "spot on"'. Even with enhancements in processor speeds and broadband connectivity, there will be times where prices lag the exchanges. This is an industry hazard. Unfortunately, there are one or two traders who spoil it for everyone else.
We go out of our way not to place clients on Dealer Referral, but sometimes we have no choice. The fewer clients we have on Dealer Referral, the less time our Traders need to spend checking prices!>>