Originally Posted by LonLH
As per Aeroflot website and russian embassy and my travel agent, you don't need a transit visa as long as you don't leave the airport and catch a connecting flight within 24 hours. I will double check with SU at LHR anyway before I board.
I will let you know what happens.
I look forward to hearing back from you. I was told by an immigration officer upon leaving the country in February that I could come back in for a less than 24 hour transit without a new visa. Since it's Russia you're pretty much at the mercy of the person you are dealing with. I wish you the best!