The duo made their way to a car where they were joined by The Hurst band member Theo Hutchcraft, who sat in between them.
Earlier in the night, Ellie hit the step and repeat while arriving at the 2014 Capital Summertime Ball at Wembley Stadium. Calvin also attended the event.
“Had such a good time opening the Capital Summertime Ball! Have an amazing day!!!” he tweeted.
FYI: Ellie is wearing J Brand pants.