This is what happened at our polling station. Only 4 people on duty. One read your poll card number, the next person marked it off, the thirf handed you a ballot paper and the next sat next to the ballot box. There was a queue when I arrived at 7:30am in the morning so it should have been clear there were not enough people running the show. The number remained at 4 helpers from what I've heard.
The timings are also antiquated. In London many, many people work from 7am-9pm on most days. Then they have to get transport back to their homes, which are often not in London. My OH did a postal vote but as it was he and some colleagues were stuck in emergency meetings for 12 hours and they could not vote. Had they left to vote then it would not have gone down well and they could have kissed any potential promotions goodbye. In the borough of London that I have just left there were huge queues and many could not vote but had it been opened at 5am and shut at 12midnight then I don't think some of these problems would have occurred.
The lack of ballot papers is outrageous!