Legality of overtaking cyclists

On my fixed-gear I generally keep up with traffic or overtake it (in the city, not the countryside) but on my hybrid I toddle about at 10mph. When I turn right I do what the Highway Code tells me and throw out an arm as an indicator, but very often the cars just buzz past me anyway, until I decide I’ve had enough and begin to edge out.

Can you go into this in a bit more detail? Do you just stick your arm out?

As others have mentioned, try and make eye contact with the driver. Take an arm off the bars if need be and turn your body, so they can see what you're trying to day and you have a clearer view. Once eye contact is made, *then *stick yer arm out.

Sorry if I [st]missed something[/st] sound particularly patronising.