Gwen Stefani and Gavin Rossdale Family Shopping | Pictures

Gwen Stefani and Gavin Rossdale held hands for a walk around London with their two sons, Kingston and Zuma, yesterday. Gwen, Gavin, Kingston, and Zuma then headed to the airport together to catch a flight out of town this morning. The Stefani-Rossdale crew has been spending quality time together since last month. The foursome typically spends the Winter holidays with their extended Rossdale relatives, including Zuma and Kingston's half-sister, Daisy Lowe, in England.

The trip brought some much-appreciated downtime for the rocker parents, who are coming off of a busy 2012. Gwen released a new album with No Doubt and Gavin traveled around the world with Bush. Gwen also graces the cover of this month's Vogue and, inside the publication, talked about marriage with Gavin. She said of their life together, "It is the ultimate collaboration. Both of us have such strong opinions about how it should be, and it's really fun to do it together."