Persimmon has put its record interim pre-tax profits of £271.5 million down to the successful integration of Westbury. The results for the six months to June 30 2006 include five and a half months of Westbury trading, which took Persimmon’s turnover to £1.5 billion and increased pre-tax profit by 16%. Completions grew by more than 38% to 8,226 units. Chief …