Corrected entry: When Arthur is telling the knights about their final mission, just after Bors storms out, he says, "Venora'll kill me.", but his lips don't move.
Corrected entry: The Saxons are seen invading to the north of Hadrian's' wall. In reality, they invaded to the south of it, and that is the reason why they managed to take control of Southern England.
Correction: The Angles/Saxons invaded and settled lands between Hadrian's Wall and the Antonine Wall and River Firth to the North, much of what is Lowland Scotland today, including Lothian/Edinburgh. This Saxon colony was known as Bernicia, and became the northern part of the Anglo-Saxon Kingdom of Northumbria. This Saxon colony existed up until the 11th Century, when invading Picts/Scots took it and subdued the Anglo-Saxon and Briton populations living in the region. It became part of Scotland from that time forward and no longer a part of the Anglo-Saxon/English.
Correction: This is spoken while he is grimacing, and only half of it is onscreen. Ray Winstone is not known for his enunciation skills, but he does speak this line... the part of it we see, anyway.