Didn't see any lights personally but I'm genuinely curious where on the highway this was? I'm based near Salisbury and we get a fair bit of unusual aerial activity around here, especially over the plain.
The missing time element is what gets me. That's not something you can easily explain away. I've been reading accounts for years and the time loss component keeps coming up again and again in the more credible cases, way more than most people realise.
Did you have any physical symptoms afterwards? Headache, unusual tiredness, anything like that? And do you remember roughly what time the lights appeared vs what time you actually got home, or did someone else notice you were late? Just trying to get a clearer picture of the timeline because that detail matters a lot with these things.