Hi therocboy,
Our Trading Platform does allow you to set up stop losses on any trade.
You can find simple instructions on our website, just visit http://www.lse.co.uk/share-trading/how-to-use-guide.asp#q13
Alternatively, you can contact a member of our Trading Team, who will be happy to provide further assistance. To contact them either email trading@lse.co.uk or call 01892 700 842.
Hope the above helps and good luck with your trades!