chloe mccardel — an australian endurance swimmer — finishes a record—breaking crossing of the englishng up at 4:30 — dateline london discusses the deal between israel and the united arab emirates. hello, and welcome to bbc news. there's more uncertainty and confusion for hundreds of thousands of a—level and gcse students today. the exams regulator quual withdrew its advice for those wanting to appeal within hours of making it public. the government has been under fire since thursday's a—level grades were awarded — with nearly 40% downgraded by quual. gcse results are due this week — having been assessed using the same algorithm as a—levels. here's our political correspondent peter saull. in ordinary times, they'd know what their next step would be by now. and the class of 2020 is facing more uncertainty. three days after the results came out, here, or so we thought, was the criteria for appealing. on this page of quual's website, students and teachers could find out what a valid mock exam looks like, but just hours later, the document disappeared. in a statement, the regulator said...