There's a Nigerian prince who emails me, claims to be able to generate massive returns. I'd go with him.
What level of risk are you prepared to take?
If the answer is 'none' - you're probably looking at <3% return ..
All on red.
Swing trade RBS, seriously.
Current Interest rates aren't worth anything when it comes to small investments. So I'd say forsake that small growth exchanging it instead for the slim but not totally non-existent chance of a big win - Premium Bonds.