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To order servicing from Canon UK, go tohttp://www.canon.co.uk/Support/Consumer_Products/Repair_Information.aspx
and read the information there, then go to the Repair Form tab (right-most of three tabs on that page) and so forth.
FYI, the error 5200 *might* perhaps be cleared by this reset procedure:
Turn printer Off.
While Off, hold down the STOP button and hold it for a little bit, then press the On button and hold the On button and release the STOP button.
Press STOP 5 times then release both buttons together the last (5th) button-press.
After about 1 minutes, turn the printer Off for 1/2 minute or more, then you can turn it On. That may clear the error.
Warning: this works with a different model of Canon printer. So I don't advise trying it if your printer is still covered by warranty. It's a sort of last-ditch thing to try, if you wish to see whether you can save servicing costs or get through having it still work for you for a while.
Canon's own warranty (which does not apply to printers sold 'used' or 'as-is') is one year from date of original purchase.
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