Lee just to refresh your memory, here's what the highway code says about traffic lights with regards the OP.
'
RED means
‘Stop’. Wait behind the stop line on the carriageway.
RED AND AMBER(phase prior to RED)also means
‘Stop’. Do not pass through or start until GREEN shows.'
So to travel on thru a light just turning red would be an RLJ.
As to being committed and unable to stop safely at an amber/red light, a situation we have all faced, Arch had actually said the following in post 14;
'If the light goes amber, and you can stop safely (IE, there isn't someone right up your back, or you can stop without skidding) then you must stop.'
But then you say this in post 17;
'Not if you cannot stop safely. Have you read the highway code? When I said earlier this is what I actually meant in respect of whether you are able to stop.'
It's fairly obvious that you didn't really read the posts because you missed a point that you should have actually agreed upon.
Anytime you feel you want to add anything that might actually be helpful, please feel free.