Shares of Wakefield-based greeting card and gift retailer Card Factory fell about 8% on Tuesday after it published results for the six months ended July 31, 2021, revised its long-term guidance and warned of "potential disruption from driver and labour shortages." First-half revenue rose 16.3% to £116.9 million and pre-tax loss narrowed to £6.5 million from £22.2 million a year earlier. In its outlook, Card Factory said: "Notwithstanding short-term uncertainty around the speed of the market recovery the well-publicised disruption that is being seen in the supply chain, shortage of staff heading into Christmas, increasing freight costs, increased energy costs and adverse product mix, we remain cautiously positive about the second half of FY22. "We have worked extensively to make sure we are as well prepared as possible for the forthcoming Christmas period to minimise the potential disruption from driver and labour shortages …