Very nice, You can't beat a bit of practical innovation, To make the top a little more useful, the edges of the yew could be stepped down for the thickness of the angle iron, Making a flat surface, Hope you don't mind the comment!
Yes that's a good idea with the stepping down. I have also done exactly that I sanding sealed it 4 times than a wax over it I think varnish can make it look cheap. Good minds think alike.