So it's a "No".
Now it's our turn. If an online petition gets support of 100k people then it has to be debated in the House of Commons.... so let's petition for an English vote on whether we want Scotland as part of the Union.
I have never before heard of a divorce being decided by one half of the marriage (well, settlements maybe), so let us have our say. So Scotland, it's a "yes" from us . Now sod off.
The effect on England's economy would be like the effect on the Euro if Greece were no longer part of it.