Nety: A bit off topic but included in the insurance issue. Check your contents policy as well. If you are traveling with work and for instance take your personal camera with you most contents policy's will not cover the camera if it is lost/broken etc.
Back on topic my point with Wof etc. is that you are claiming per km. Wof costs the same amount if you travel 0km while it is valid or 30,000km. Therefore how can you claim a km cost for it? Same with insurance although I agree if you need to get additional cover or different cover then you should be reimbursed for that however I would see that as being separate to the mileage claim.
Just because it is a fixed cost doesn't mean it shouldn't be reimbursed, does it? If your car is used half for work/half for personal, it's only fair that half the fixed costs are reimbursed. Paying a per km rate is a proxy to paying the actual costs. That is why the 74c IRD rate is only valid up to 5000km, it shares the fixed costs out.