[DavidTrap (David)]

If it's just a spot or two, try using a blower bulb. Hold the camera pointing downwards, open the shutter for a long exposure and blow at the sensor. Make sure you're not touching anything and that you get the tip out before shutter closes and the mirror flips back down.

If the dust doesn't shift with that, you'll need a proper clean - agree it's worth getting it done by someone in proper workshop. I wonder if the pro coming to town will just be using one of the kits you can buy on eBay.

DT