Hi Diver,
Sorry to hear about that mate.
FWIW I recently transferred my pension funds to what was SIPPDeal and is now called
www.youinvest.co.uk
It's pretty basic but allows you to place stops and limit orders as you'd expect and their dealing fees are quite low at £4.95 a pop (it varies depending - DYOR etc).
I used to have funds with iii but withdrew them a long time ago as I had so many problems trying to buy/sell into stock which was available (I could see it on L2) but they simply couldn't/wouldn't place the trade.
Obviously there are others out there but I'm happy (so far) with youinvest.
Good luck in finding a suitable platform.