If you're going to trade small cap shares then Capital Spreads have a much better policy on stop losses.
Be careful with some of the other firms who will trigger your stop loss based on the bid or ask price simply 'touching' your specified level. With CS they wait for volume to be traded at a particular level. This means that you dont get stopped out simply because the spread widens due to illiquidity (like at the market open or close).
On top of that IG's slippage policy is entirely one sided and guess who it favours? If your stop is touched and the market keeps on tanking past your stop then they can pass on the full loss based up on price at the time that they actually fill your stop order - if on the other hand your stop is triggered and the market quickly re-bounds in your favour they specify that your order will be filled at the stop level which you set - this is unfair because if they are allowed to gap your stop on the one hand they should be prepared to pass on any betterment in the case of the reverse.
Hope this helps,
Steve.
Yes, IG seem committed to giving clients the worst price, which does seem eversoslightly contradictory to the MFiD idea.