It’s interesting to see that this ‘incident' is to be investigated by the UK Air Accidents Investigation Branch. Rarely does this happen unless an incident is considered to be a gnats away from a disaster. No doubt the AAIB will produce a highly detailed investigation. Even now, they may be pondering the ‘procedures’ by which two air-liners can be deliberately brought within spitting distance of one another – and over the ocean. Granted that off-set track isn’t part of the equation when aircraft are pointing the same way - but RVSM! – we’ll live to rue the day.