Help! BBC iplayer has shrunk

[Nick]

... it's based on Google's underpinning. So we presume it's slurping all your data for both  of them....

Poor science - actually: no science, just supposition and innuendo.

Many browsers are based on the open source Chromium project - in itself, it only has functional logging and callbacks (no commercial collection of data) - no PII at all - what developers in differing organisations chose to add is their business, quite literally.