By James Davey LONDON (Reuters) -Poundland owner Pepco Group can shelter customers from the disruptions to supply and costs caused by Iran-backed Yemeni Houthi militants in the Red Sea provided they do not drag on, its executive chairman said on Thursday. “I don’t think the experience for customers, in our stores at least, will be massively operationally disrupted,” Andy Bond told Reuters in an interview after the group updated on Christmas trading. “Our best forecast at the minute is we’re able to absorb the incremental cost that we estimate will come through and still achieve … gross margi…