By all accounts he's maybe doing a good thing by connecting smaller PPE vendors to customers. From what I've read (and know first hand), smaller suppliers find it notoriously difficult to break into NHS procurement.
That article states that "he is a head of procurement for the NHS in London" (the italicisation of "a" is mine). What does that even mean?
Sounds more like a guy who's doing a bit of business on the side and Guardian haven't really shown conclusively that there's a conflict of interest.