What's higher than Upmarket?  Off-market.

The off-market search is the supreme bespoke house-hunting service, ideally suited to homes of special quality and distinction.

If the kind of property you want is not on our current list, you can appoint us to conduct an extensive search elsewhere via our well-placed contacts.  As we are not the agents (or co-agents), there is no conflict of interest, and we are motivated to secure the property for you at the lowest price. Unlike many of our competitors, we don’t charge administrative expenses, but only a single introduction fee, payable upon on exchange of contracts.