jontutcher
BBC Radio 3 uses no dynamic range compression, so might be most comparable to NPR (although it's likely that each local station applies a ton of compression before the signal hits the air).
Most (other) radio stations apply copious amounts of multiband dynamic range compression on their output - with the nickname of "sausage-making", since the process turns waveforms that look like music into waveforms that look like sausages. In the FM days, louder sounding stations were associated with better signals, so got bigger market share...
The BBC is license-fee funded rather than tax funded so that (in theory at least) they don't have to rely directly on the government for funding - private citizens directly fund the corporation.
This goes some way to ensuring more independence, and fairer news output.
In reality, the government holds the BBC to ransom every eight years when the royal charter they operate under is re-written. There will always be claims of political bias on both sides.