Terra Firma Capital Partners and Wellcome Trust have been joined by HBOS in their efforts to acquire British drugstore chain Alliance Boots PLC. The trio offered a revised 1,115 pence per share for Boots, just after the company's board agreed to accept a 1,090-per share offer from KKR and Boots chairman/largest shareholder Stefano Pessina. The Terra Firma-led offer values Boots at approximately Gbp10.9 billion.