Write to the house
A short letter describing the decision you cannot currently defend. We reply within two working days and say whether a public intake, a table, or a later season is the honest next step.
A teaching table, not a content mill.
Workspace Cachehub opened in 2014 as an internal reading group for a product team that had more charts than language. It is now a public studio, still small, still based at 90 Moulton Road in Gulworthy, still uninterested in becoming a platform.
The Gulworthy table is used for week five of the flagship and for the occasional winter salon.
Mission
We exist so that App Analytics can be spoken in rooms that contain doubt. A number that cannot be questioned is not insight; it is décor. The house trains operators to write claims that invite a follow-up and still hold.
We are deliberately not a vendor shop. Suites change names. Retention does not. If a method only works inside one product, we treat it as a trick and leave it off the syllabus.
Pedagogy
Every week starts with writing, not with a tour of a board. Students bring a sentence. The table argues with the sentence. Only then do we open the tool. This irritates people who like demonstrations. It is also why the work tends to last after the login expires.
Homework is short and unavoidable. If you cannot protect four hours a week besides the live sessions, wait for a quieter season. We would rather have an empty chair than a silent one.
Community
After the six weeks
Alumni receive a low-volume letter four times a year — a single problem, a short method, no product pitches. There is a private list where people may ask for a second pair of eyes on a window definition. We moderate it lightly and close threads that turn into tool wars.
Twice a year we hold a salon in Gulworthy for whoever can travel. It is not a conference. There are no badges. If you come, bring one chart you are ashamed of; those are the useful ones.
Students have arrived from product teams in Manchester, Bristol, Edinburgh, and from smaller firms that will never appear on a “startups to watch” list. The house is not London-only, even when the trains make it feel that way.
The journey
From first note to Signal Note
Arrive with a product, or borrow ours
Bring event history if you can. If you cannot, you work from the licensed grocery-list sample — noisy, British, and full of the timezone mistakes we see in the wild.
Sit the live hours
Twice a week. Cameras are a courtesy, speaking is not optional. The table is small enough that silence is conspicuous.
Leave with a note you would sign
The Signal Note is the artefact. If it is still a slide deck of twelve charts, we have failed, and we will say so in the final review rather than clap.