Could I ask, and I'm sorry if I'm being dense, why this petition is not a No 10 Downing St website petition? If we sign something outside the Government's own systems, they'll have as good a reason as ever to completely ignore people's opinions.
Also, and sorry for being a pedant, you should have had that proofread before posting it. As strong as the sentiment is, I'm sorry to say that it looks slapdash and is not likely to be taken seriously (not that Broon seems to be the sort of man to take people's genuine opinions seriously anyway!). If your plan is to succeed, you need to be 100% accurate and professional, or you'll cut out a lot of people who might see it as a flash-in-the-pan effort instead of a solid expression of outrage.