You don't need Gas Safe. they won't fix it for you or do anything about it. See a plumber to alter the pipe to the side and down to the groundn or do it yourself. It won't cost much to do.
If you want to do it yourself you will need
2 3m lengths 15mm copper
2 15mm compression bends
half a dozen 15mm pipe clips (stand off's)
A few 2" 8's and some rawlplugs
A junior hacksaw, a drill and borrow a set of grips or adjustable spanner and a ladder.
Cost of the materials = less then 20 quid.
Cut the pipe coming out the wall approx 20mm out.
Fit a compression bend to the cut pipe pointing to the side (whichever side you prefer) and tighten slightly.
Measure from the bend to a suitable distance past the door, about 1m should do.
Cut the pipe to size and fit to previous bend.
Level with a slight downward run, mark each side of the pipe near the centre and drill a hole put in a rawlplug and fit a clip and fit pipe to clip. (If you are going much more than 1m to the side you will need more clips suitably spaced)
Tighten bend a bit more. (It doesn't matter if it is completely watertight)
Measure from end of new pipe to 6" above ground and cut pipe to size.
Fit with bend to pipes and tighten slightly.
Plumb pipe and mark each side where you want a clip i.e. 6" from top and bottom and 2 more at equal spacing.
Drill and plug and fit clips.
Fit pipe to clips then tighten bend a bit more.
Take a picture of your first plumbing job to show the weans.
Job done in less time than it took to explain this.