MNK Exhibit 23.1 03.06.15

We consent to the incorporation by reference in Registration Statement Nos. 333-189711, 333-189712, 333-189716, and 333-196054 on Form S-8 of our report dated November 24, 2014 (April 3, 2015 as to Footnotes 20 and 23), relating to the consolidated and combined financial statements of Mallinckrodt plc (which report expresses an unqualified opinion and includes an explanatory paragraph related to the fact that Mallinckrodt plc’s results for periods prior to June 28, 2013, including the nine months ended June 28, 2013 that is included within the Mallinckrodt plc’s fiscal 2013 results, may not be indicative of the Mallinckrodt plc’s future performance and do not necessarily reflect the results of operations, financial position and cash flows that would have been had it operated as an independent, publicly-traded company for the entirety of the periods presented), appearing in this Form 8-K of Mallinckrodt plc as of April 3, 2015.