The firm behind the work

VaultNexCoreGrid was founded in 2017 by Marcus Ellery after eleven years in senior roles at two large strategy houses in London and Toronto. The decision to go independent was not a dramatic one. Marcus had spent the better part of a decade watching genuinely good recommendations fail to stick because the consulting model itself was structured to keep clients dependent. The firm was built around a single corrective principle: every engagement should leave the client more capable than it found them, not more reliant on outside help.

The name of the firm is deliberately abstract. Marcus chose it because he did not want the firm's identity to rest on a personality or a geography. The work is the identity. In practice, VaultNexCoreGrid operates as a tight team of three: Marcus, a senior associate with a background in organisational psychology, and a second associate who spent eight years running operations for a mid-sized logistics company before moving into consulting. That operational background matters. We have sat in the rooms where the decisions land, not just the rooms where they are made.

Today the firm works primarily with mid-market companies in professional services, logistics, and technology-adjacent sectors, typically at moments of significant transition: a merger, a leadership change, a growth plateau, or a strategic pivot that has stalled. We take on a small number of engagements each year, deliberately. The current client roster sits at seven active engagements. We are not trying to grow into a large firm. We are trying to do this work well, for a long time, for clients who value the difference.