Very pretty CGI, but my god! What a load of rubbish! Dreadful simplistic nonsense in which Britons were good, and terribly oppressed by the nasty nasty Romans. The fact that many of the elite of the British tribes had been happily buying into Roman culture for a century before Claudius' legions was ignored. All the time we were being told about the 'Britons' in their revolt, yet it was only two tribes in east Anglia and the Midlands. All the others stayed loyal to Rome. In fact, the idea of 'the Britons' was a Roman invention - the people living on the island certainly didn't think of themselves as a single nation. The peoples of Kent and Sussex didn't seem particularly incensed by what was happening to the Druids.
As for the Druids, the programme presented a picture of nasty Roman legionaries butchering defenceless old priests. The fact that the one source suggests that the Druids commanded strong military forces gets overlooked, as was the suggestion that they indulged in human sacrifice. They wouldn't do that, you see - too nice. The one atrocity of the Iceni that was mentioned was qualified as 'probably propaganda' - yet every tabloid sensationalist tale of what the Romans did was repeated as fact, and even added to. We have no knowledge of the ages of Boudicca's daughters - you can't suggest, as this programme did, that they were mere children without any good reason.
It is sometimes assumed (and was again in this programme) that because the Roman governor Suetonius was off suppressing the Druids when the revolt happened, this was why the revolt happened; post hoc ergo propter hoc. There's not a shred of evidence for this hypothesis in either of the writers who give accounts of the revolt, both of whom see economic factors as being principally at work. (My own theory is that since the Druids appear to have been an independent power block within their society over which they could exercise no control, many British elites were glad to see the back of them.)
What is never done is for the revolt to be placed in the wider context of what is going on in the Roman empire at the time. We have a general collapse of the standards of provincial government in the reign of Nero. At the beginning of his reign, there were a number of trials of provincial governors for financial misconduct while in post, charges brought by provincials after the governor's term of office. In every one of these, the governor got off. About AD 60, these trials stopped, and it looks to me as if this is because the provincials just gave up using the legitimate mechanisms of complaint, as they no longer worked. Instead, they sought other avenues for protests, and it is then that we get not just the Boudiccan revolt, but also the great Jewish revolt, and the revolt of Julius Vindex in Gaul in AD 68, which, though directed at Nero personally, had definite nationalistic overtones.
The writers of Battlefield Britain hadn't done their homework properly - they stated that the IX Legion was destroyed, yet the same source that tells us the infantry were wiped out later says that it only took 2,000 legionaries from the Continent to bring the Legion back to its full strength of 5,000. And the Romans did not have 'flimsy sandals' on their feet. They had sandals with bloody great hobnails!
And the final statement that the Roman oppression drove the Britons into Wales and Scotland. Utter nonsense! The population of Britain under the Roman empire remained mostly people whose ancestors had been there before the Roman invasion. The driving of the language into the fringes of the island happened in the Anglo-Saxon period.
And the buggers can't count. 'Nearly a thousand years after Boudicca's revolt, new invaders are coming to Britain ...' Boudicca's revolt, AD 60. Battle of Hastings, 1066. When I went to school, that was not 'almost' a thousand years ...
(Subsequent editions were apparently less awful, but the only one I saw substantial parts of was the one on the Battle of Britain.)