Bent front arches last night, i have read somewhere about where you have to put the arches on.
Is it about 10mm from front of wheel or tyre?.

If you draw/hang a line vertically from the front lip of the arch, this must project in front of the WHEEL rim to pass SVA.

the front of the cycle wing has to protrude in front of the rim of the wheel

Snap

So if wheel is a and tyre is b as long as arch c is between these should be ok.

As follows

TA mate, good drawing dont you think

You using our old crashed cycle wings then "welderman"?

Ye, going to put them through the pyramid rollers later.