Quality control alert!

I spotted what looked like a very shoddy bit of concreting on the way into London today, perhaps, to judge from the background, at Worcester Park. Not at all clear on what grounds this large bit of steel work is justified - it would take a lot of wheelchairs to pay for it - but that is not my point. My point is that the far section of the concrete base was laid or perhaps poured very carelessly, perhaps without bothering with a vibrator, with the result that this rather thin section is full of rather fat voids, clearly visible if you click on the image to enlarge it. Not at all clear what sort of a load it is good for...

Will they just hide the offending concrete from view, will they squirt grout into the holes to hide them from the inspector or what?

Would British Rail have done a better job?