Also try this one..
When you go to register the CCJ you can also pay a bit extra for it to be delivered by the bailiff. The chap turns up and has to say something down the lines of "Good afternoon, could I please speak to Mr/Mrs......." The secretary/owner of the business themself or their sprog that first speaks to them in person (determined upon whether they work from home or in an office based business) always asks "who are you?".
The bailiff then replys " I am the sheriff of the court of....... and I have been asked to deliver this notice of non-payment to Mr/Mrs ......"
This usually results in the people shitting themselves. Then between the employees or the sprogs rumours begin to start, which puts another nail in the coffin for the bastard that owes you munny. If it is aktuwaly that person themself that gets the bailiff talking to them.....the normal answer is he/she is not here at the moment. Anyway, the initial contact has to sign for the paperwork....the general approach from this point is that they do their best to stop the court action and pay up quite quickly. What bullshit they come up with to defend the necessity of a chap from the court turning up at the door to their spouse/sprog or office staff is no longer your problem.
Give it a try, it werked 100% for me.