Hello there Katrina.
The inevitable has happened, something we have been discussing since just yesterday.
Assuming that the garage that carried out the removal and emulation told you that it will pass the MOT, your first port of call is to see what they have to say I guess. If they made no mention of it or it does not state it on their website or anywhere within their promotional literature you will probably be wasting your time contacting them.
Utlise the next half hour or so on checking their site and any and all documentation that they gave you when you had the work done by them, that is what I would be doing right now.....
I would be very interested to hear what other owners who have had theirs removed get on with this too.
Did the examiner state the reasons for failing it on DPF removed or tampered with, how did he give that ruling? I am inclined to think that he probably noticed it first and then when he did the emissions test it must have been off the charts compared to cars with DPF's still present as they register hardly anything when the analyser is connected.
Let us know what happens tomorrow, I really want to hear what the removal team have to say about it as most of them advertise their services as:
DOES NOT AFFECT MOT OR EMISSIONS!