Steve, I'm wondering how you have done over the last 3 months. You mentioned writing calls on Lehman stock then buying them back later for less.
Have you managed to protect your equity? I have been buying a few speculative option contracts on financial stock this week, about 20 pounds a contract seems a good stake size, then selling them back for a little more. There is a lot to be said for simple basic speculation when markets are volatile. Max 20 pounds to loose on a small trade, and possibly +15% back the same day, no equity other than 20 pounds needed.
Simple BTL property investment, in a rising market, with a good mortgage did in fact offer very good leverage at low risk. Perhaps an easy 3% a month on equity, provided you sold on/refinanced & renovated a bit to keep leverage high. BTL over the last 10 years is a tough act to follow.