Just checked the Angel tuning website and the answer is not as shown in the OP's post:

Will my car pass its MOT without a DPF?

"As of February 2014, the MoT Test Stations will as part of their VISUAL inspection during the test, check to ensure the existence of the DPF. So technically speaking, until such a time that there is a method to detect soot in the exhaust gases, it is almost an impossible task to detect the removal by any other means than the visual checking to see if the exhaust has been cut and welded! So the answer to the above question is no it will not, but only if they can detect it through the visual inspection of the exhaust. We have to recommend that you look at alternatives, such as cleaning or replacement (and we can offer both at very sensible and much more competitive prices than the dealers). However, should you wish us to, we will remove the DPF for you, once you sign an authorisation letter for us to do so.!"

It appears they are being reasonably honest.

So why dd the OP post the wrong info?

As skidpan has said.

It's called 'type approval'. Basically, your car is only legal when it is as originally supplied. Any alterations MAY make it illegal for road use. One of the alterations which qualifies as such is emission control eguipment : removal of such equipment would make the vehicle illegal.

Being caught is another matter, of course.

If you are caught (or the car produces lots of smoke / soot and fails the MOT or a police stop picks this up) then you'd have to pay out for an entirely new DPF, and fitting for the same, before you could get your car back on the road. An expensive proposition.