Ann Yerburgh, chair of Daniel Thwaites, has invested £27,500 in increasing her stake in the Lancashire-based brewer and pub operator. Yerburgh purchased 25,000 shares at £1.10 per share and now holds 3,613,860 shares in the company, equivalent of its 5.735% total share capital. Earlier this week, the company reported a slight rise in pre-tax profit for the six months to 30 September 2011, during what it described as another “very challenging period” for the economy and the consumer. Pre-tax profit for the period rose from £4.4m in 2010 to £4.6m, while turnover increased 8% on the previous year to £70.9m. Operating profit climbed 3% to £7.6m. It said that trading across its 350-strong tenanted pub estate benefited from good weather in April and May and the extra bank holiday for Royal Wedding.