Five hours later, a Ruthenian aircraft, the Globemaster, cruised above the capital city of London at 30,000 feet. Inside the cargo bay of the Globemaster is Rolan, memorizing the blueprints of Buckingham Palace obtained from a classified source.
He kept in mind the hidden pathways the Queen could possibly take if he were to make an appearance later. So that if she went into hiding, he'd know where to find her.
Aside from the blueprints, Rolan also studied the shifts of the Royal Guards stationed in Buckingham Palace. Finding out the best possible route without an unnecessary encounter with the guards would be preferable. However, looking at the numbers of the Royal Guards and their current shifts, there was no blindspot whatsoever he can use to sneak his way in.
In this case, Rolan would have to break his way in, kill anyone who gets in his way, make way to the throne room, and retrieve the Queen.