(Telecompaper) Cable operator Liberty Global added 370,000 revenue-generating units in the first quarter, for a total 48.64 million at the end of March. The company gained 345,000 RGUs on an organic basis, and the remainder came from small acquisitions in the UK and Austria. The total included 239,000 new broadband customers and 177,000 more telephony subscribers, offsetting a loss of 71,000 TV customers. The customer base was down by a net 6,000 in the three months, to 24.50 million. Liberty Global said it passed the 10 million triple-play customers mark during the quarter, ending Q1 with 57 percent of its customers on a bundled offer. The company also highlighted sales of its advanced TV boxes, Horizon and Tivo, which added 250,000 subscribers in Q1 to reach 550,000 Horizon users and 2.1 million Tivo customers. ARPU was USD 49.08 for the quarter, up 27 percent year-on-year thanks to the takeover of Virgin Media. The acquisition helped revenues increase to USD 4.5 billion from USD 2.7 billion a year ago. On a pro forma basis and excluding currency effects, revenues were up 2 percent. Operating cash flow was up 69 percent year-on-year to USD 2.1 billion, equal to 8 percent growth on a pro forma basis. Liberty Global maintained capital expenditure at 20 percent of revenue in the quarter, or USD 910 million.