BARCELONA (Reuters) – Britain’s competition watchdog on Thursday approved Spanish mobile telephone infrastructure operator Cellnex’s acquisition of Hong Kong-based CK Hutchison’s British assets if it sells at least 1,000 mobile phone towers. The Competition and Markets Authority said the 10-billion-euro ($11.05 billion) deal would harm competition and could lead to higher prices or lower quality services for mobile carriers. To address these concerns, Cellnex will have to dispose of 1,000 towers, it said. The company’s CEO Tobias Martinez said in a statement their presence in Britain as a ‘neu…