Chief executive stresses "fines are a last resort."
Digital Markets Competition and Consumers Bill
Apple and Google operating systems dominate the UK's smartphone market, leaving little room for other competitors.
Marcus Bokkerink out and former Amazon UK boss Doug Gurr in at UK competition and markets regulator.
New ruling allows the Competition and Markets Authority to compel the production of information from companies located outside of the UK.
The DMA has an extra-territorial effect, applying to companies that provide services in the EU regardless of where they are based.
Changes to Digital Markets, Competition and Consumers Bill alter risk of consumer law compliance.
Warning to businesses from the UK's competition and information authorities against harmful design practices to obtain personal data.
New rules will promote competition amongst "gatekeepers".