Jessica Biel shared a sweet kiss with Justin Timberlake after returning from her birthday trip to Barbados Credit: FameFlynet UK/FameFlynet Pictures

Lovers in London! Justin Timberlake and wife Jessica Biel engaged in a little overseas public display of affection on Thursday, March 27, when they shared a romantic kiss at London's Heathrow airport. Click here to see more photos of the couple.

Biel, 32, leaned lovingly into her husband as they smooched, resting her hand lightly on his butt. Both wore black jackets and jeans; Timberlake, 33, also sported a black fedora and thick-rimmed glasses.

The happy couple jetted off to the U.K. just hours after returning to L.A. following Biel's birthday trip to Barbados, where they checked into a private villa near the top-of-the-line Sandy Lane resort and chartered a $1,125-per-day catamaran. As seen in Us Weekly's exclusive pictures of the getaway, the couple enjoyed an afternoon of wakeboarding together on March 14.

"Justin wasn't very good at wakeboarding. Jessica was much better!" an onlooker told Us of the pair. "They looked madly in love as they joked around," the witness added.

Now that the two are back on dry land, Timberlake is gearing up to resume his world tour. The next leg begins on March 30 with a sold-out show at the Motorpoint Arena in Sheffield, England. Biel is busy, too, with her new children's restaurant, Au Fudge, in Santa Monica, Calif.