By Jon Robinson Britvic, the company behind brands such as Robinsons squash, has rejected a second takeover offer from Carlsberg worth around £3bn. The Hemel Hempstead-headquartered company, which has an exclusive licence with PepsiCo to make and sell Pepsi Max, 7up, Rockstar Energy and Lipton Ice Tea in the UK, said the proposal “significantly undervalues” the business. Carlsberg originally made its first offer of 1,200p per share on June 7 and increased its offer to 1,250p per share on June 11. However, the board of London-listed Britvic rejected the proposal on June 17, it has been announce…