Who keeps buying
An open tender is a moment. A buyer who has awarded fifty contracts is a pattern. These are the public bodies that spend again and again — what they pay, and how many suppliers already share it.
How to read the concentration column. It is the share of a buyer's awards taken by their single most successful supplier. A high number means an entrenched incumbent — hard to displace, but it tells you exactly who to partner with or beat. A low number across many suppliers means the work is genuinely contestable.
This is built only from records the source marked as awarded. It is history, not a forecast, and it covers only what these feeds publish — a buyer absent from this table may simply publish elsewhere.
Medians are not typical cheques. USAspending and NIH return their results sorted by value, so what we hold for US agencies is the top of their book, not a representative sample. A median of billions means "the median of the largest awards we can see", not "what this agency usually pays". UK, EU and AU feeds are not value-sorted.
Median cheque is the median of that buyer's published award values, in the currency it most often uses. Values are never converted between currencies. Buyers with fewer than three recorded awards are omitted — three is the minimum at which "again and again" means anything.