It's all rather at odds with the traditional pencil-behind-ear, garden shed image of the small-volume British sports car industry. McLaren is serious about making sports cars and it shows. When you visit, there is the sense that McLaren has thought of everything, and that it knows that its plan to build 4000 MP4-12Cs a year cannot be anything other than a resounding success. It's something I've only ever experienced before with German or Japanese manufacturers. Let's not call it smugness or arrogance - let's call it quiet confidence.
Having been ferried to the MTC reception past the mound of earth and large concrete-filled hole that will become the factory for the new car, we're ushered to a tea and coffee stand, around which are clustered several McLaren F1s (no Mercedes McLaren SLRs in sight), before we file off to a room for a presentation on the car.
original story on the MP4-12C, or take a look at the 23-page official press release(!) - but a chat with Christian Marti, McLaren's regional director for Europe, reveal some fascinating insights into the attention to detail, technology and focus that's gone into the car.
The carbon fibre monocell, for instance, (a naked example of which is displayed next to the car) is an utterly astounding piece of engineering. It weighs less than 80kg, and is a one-piece moulding. Thanks to the clever design of the front and rear aluminium subframes (which are bolted rather than bonded to the carbon central monocoque), the Carbon fibre tub is all-but indestructible. McLaren was even able to re-use a single tub during crash testing.
But if you really want to get a handle on how much thought has gone into the MP4-12C, muse on this: McLaren has developed an entirely bespoke air conditioning system for the car, because the narrowest existing system is 2cm too wide. This would have meant a wider centre console, a compromised driving position, and a wider and heavier car. So McLaren built its own air-con.
The factory floor as it stands is pretty impressive. It's small, and there are currently only five cars in build, but everything is sparklingly clean, and everybody working on the cars seems relaxed and focused on the job in hand. It's more like a scientific laboratory than an assembly hall.
With the memory of such diligence of design and build fresh in our heads, the bullish confidence of Ron Dennis - who says a few words to us before we are shuttled back to the 'real world' - doesn't seem at all misplaced.
"To win, you have to be the best," he says. "So we are bravely, and without flinching, investing in our future. We will bring the same level of effort and focus to our customers as we do to winning Grands Prix."
British industry could do with more people like Ron Dennis. And more companies like McLaren.