Sir Mark Rowley has asked the home secretary to introduce legislation forcing companies to publish data on stolen devices.
The retail group already owns just over a quarter of the German fashion brand but wants to buy the rest of it.
The former deputy prime minister says changing visa rules for migrants already living in the UK would be "un-British".
Pet owners have historically been advised they should treat cats and dogs as a preventative measure every month.
Police have been contacted with new information about the West Ham co-owner following a BBC Panorama and Times investigation.