Russell who? Katy Perry hasn't wasted any time diving back into the dating scene since her December 2011 split from actor/comedian Russell Brand, having dallied with French model Baptiste Giabiconi and then quickly moving on with Florence + the Machine guitarist Robert Ackroyd.

Neither romance appeared to be very serious, nor did they last. However, it looks like the 'Wide Awake' singer is back together with one of her post-Brand hook ups. So, which one is it?

Looks like it's Ackroyd.

Hollywood Life
reports Perry, who's swapping out men as frequently as she changes her hair color, and the guitarist were spotted in the U.K.

The pair was snapped leaving London's The Dove Pub together yesterday (June 6). Perry looked adorbs in her emerald green, cross-adorned dress, paired with a tough and studded black jacket that she could have snatched from Gaga's closet!

Word is Perry and Ackroyd had split previously due to their hectic schedules. Being a successful artist sometimes messes with your love life, leaving little time for romance. If they've found their way back to each other, more power to 'em. Maybe they will collab on a song?

Watch the Katy Perry 'Part of Me' Video