Photo looks edited. Looks like C1 OFL with an extra 1 added in. If it was C11 OFL the spacing is very illegal and bolts are in wrong place for a start. £30 otsf for that mate.
Not my cup of tea mate but if your happy thats all cool.
Deffo not legal, but it happens a lot. I got pulled for illegal spacing but it was due to i was still waiting for my legal prints to arrive and my plate had changed over so they let me off.
I don't think it matters about where the holes are many car garages up here to them at the top or bottom or middle etc etc