Edward is required to travel for work. Which one of the following statements is correct regarding his claiming of his travel expenses?

1. Edward is required to keep a travel diary for any travel, away from his usual residence, that is for more than 6 nights in a row

1. Edward does not need to keep any records regarding his travel as his employer will write a letter confirming that Edward was required to travel for work purposes and this will be sufficient evidence

1. Edward can jot some basic notes in his diary about when he left his usual residence and when he returned and this will be sufficient even for travel for more than 6 nights in a row

1. Edward does not need to keep any records and can deal with his record keeping whenever he is subject to an audit