Between flights.  A BA A320 G-BUSB also between flights to LHR.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/130275500@N02">G B_NZ</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/130275500@N02/16109137186/">Dan Air HS 748 G-BFLL at NCL</a>