Change at Heathrow? (5)
I believe the answer is:
pence
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">change at heathrow</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pence that I've seen before include "Small sum of money" , "''Take care of the ..... and the pounds will take care of themselves''" , "Small coppers" , "Fractions of a pound" , "They were hundredths of a pound" .)