He built up a billion pound Scottish brewery business, and then got accused of inappropriate behaviour and of presiding over a toxic work culture. First there was a letter signed by around 100 ex-employees in June 2021 alleging a culture of fear, then in January 2022 a BBC Disclosure programme aired further complaints. The primary target, BrewDog co-founder and chief executive James Watt, denied the allegations as false and complained of a smear campaign against him. Then last year, he won a stg£100,000 fraud claim in a Scottish court against a woman Emili Ziem. Watt said Ziem had told him…