Hi. Thanks for checking this out. Last night, I had a flight from EGLL on the (Expert Server). I was cleared for takeoff and i mentioned i’d be heading north to the active ATC. A couple minutes after climbing out, I checked my flight plan and i found out i could save a couple hours if i head south, I was almost outside the EGLL Tower Rader,
and turning south would mean heading back to the airport region, I was at 6,700ft and 9 nautical miles to the airport, I contacted the ATC for TRANSITION and i got the ““Please check tutorials on the forum for assistance using atc instructions””. That has left me wondering what i could have done wrong, Was i supposed to continue with my flight over an active airport without requesting transition? I would be glad to hear from someone as it would help me if it ever happens again.