This week's bubbly trading update reinforced this view, and allowed it to continue the 12% share price gain enjoyed during the past four weeks -- the London firm saw like-for-like sales advance 5% during January-June, with product rollouts like its Scholl Express Pedi and Durex Real Feel helping to drive shopper interest.
What is the relationship between 'Durex' and 'London' in the context of the input sentence.
Options: headquarters location, developer, chief executive officer, parent organization