LONDON, Sept 9 (Reuters) - Britain’s supply chain is creaking, causing continuing product availability issues, the boss of the country’s fourth largest supermarket group Morrisons said on Thursday. “That combination of a dearth of labour, a dearth of skills, the pingdemic and COVID does mean that everywhere in the supply chain there is strain,” Chief Executive David Potts told Reuters on Thursday after the group published first-half results. He said the firm had experienced some shortages of water, carbonates, juice, crisps, pet food and wine. “We have still got an aisle full of water, we’ve still got pop to choose from, it’s just not as wide a range as it was,” he said. (Reporting by James Davey, Editing by Paul Sandle)