Problem is ... that whoever did the operation didn't do it very well. He was definately NOT trying to hide it. It can be easily be seen when you open the little plastic lid and in the bottom of the car, you can easily see the weldings from under the car as well. It IS done right, but not particularly pretty.

I guess it might be possible to cut it out again and the do the job better and more detailed. Maybe the MOT hall won't notice it ... but it's a definate maybe.
But ... I don't think so ... the welded area is only about 10x30cm ... so only a little bit bigger than the actual VIN plate, so it will be make it look better from top, when you open the plastic lid.