MID-SIZED and large businesses are performing better, says to a survey.

The latest Insolvency Index from business information group Experian showed that firms employing 51 to 100 staff saw failure rates drop from 0.23% in June, 2010, to 0.19% last month.

The rate of failure among firms with 101 to 500 employees more than halved year-on-year, falling from 0.17% to 0.08%.

Yorkshire logged 144 insolvencies in June – 3.8% up on the same month last year.

The tally was unchanged as a percentage of the total business “population” for the region at 0.12%.

The East Midlands was the most improved region in June, 2011, with the rate dropping from 0.11% in June last year to 0.09%.

The South West had the lowest rate of failures, with just 0.07% of the business population becoming insolvent last month.Š

Experian’s figures showed that the UK failure rate was stable at 0.09%.

Construction and building materials were the worst-hit sectors.

The best-performing sectors included chemicals, pharmaceuticals, mining and utilities.