Shares in Britvic reached a record high yesterday, climbing 18p to 281p, after Permira, the private equity group, confirmed it had lifted its stake in the soft drinks company from 2.9% to almost 14%. Permira spent £68m raising its stake in Britvic to 13.98%, increasing speculation that it was still interested in taking over the manufacturer of Tango and Robinsons. The private equity firm pulled out of a planed 280p-a-share approach for Britvic at the last minute in October, after news of the move was leaked to the market. Under takeover rules Permira would have to wait six months before being able to make a fresh approach for Britvic, unless it secures the backing of the soft drinks company’s board or if other bidders came forward. The latest share price values Britvic at £604m, or close to £890m including debt.