According to this AAIB report on a June 2009 mid-air collision between an RAF Grob Tutor and a glider, the Tutor’s maximum design operating speed (VDO) is greater than its never-exceed speed (VNE):
(5) In the case of aerobatic category aeroplanes, allow each occupant to abandon the aeroplane at any speed between VSO and VDO10; [Quoting the applicable certification requirements for aircraft emergency exits; footnote in source.]
10 VDO is the maximum design operating speed which for the Tutor is 1.1 VNE or 205 kt. [The report’s explanation of the aforementioned footnote. The bolding is mine. Everything I have quoted from the report comes from page 62 (numbered as page 52).]
The point of the never-exceed speed is, as indicated by its name, that this speed should never be exceeded in this aircraft for any reason whatsoever; as such, aircraft are generally designed and certified with maximum operating speeds well below VNE. How can the Tutor’s design maximum operating speed be greater than its never-exceed speed?