Technically, it should fail, as per point 1 of this,

MOT Test of Exhaust and Emissions



Part of the system missing or excessively deteriorated
(from February 2014 a missing diesel particulate filter, if originally fitted, will be a Reason for Rejection)
>A catalytic converter is missing where one was fitted as standard (on vehicles subject to a full cat test only)
Mounting is missing or damaged so that the exhaust system is insecure
There is a major leak
>The system emits appreciably more noise than a similar vehicle fitted with a standard system in good condition.
>Class (v): Exhaust tailpipe positioned so that fumes are likely to enter the driver or passenger area.

And also,

MOT Test of the Instrument Panel

Warning Lamp

Missing
Does not illuminate
Indicates a fault
(For ABS) does not follow the correct sequence


So it should really fail on both points, however if you have found a garage lenient enough to pass it, good luck to you.