Day 130/17. Crowded Skies.

Leaving for work this morning and I noticed the vapour trails left overhead by many aircraft.
Where we live is under a few high level corridors for air traffic.
Most of the UK heading for Spain, Portugal and the rest of Western Europe go overhead. Also we see the transatlantic arrivals for Central Europe go overhead in the mormings.
Crowded skies. This morning the upper winds were enough to separate them into parallel lines.
Looks pretty, but is it affecting our climate?