This was one of the findings in Springdex, the quarterly survey conducted by recruitment agency Spring. It revealed that NT contractors can expect to earn £947 per week.
Katherine Tulpa, a spokeswoman for Spring IT Personnel, said, "Windows NT remains the favoured platform for Local Area Networks. The 31 per cent increase in placements over the last quarter in NT is the result of a large contractor base which has allowed us to fulfil supply requirement in this area."
The last quarter of 1999 saw Lotus Notes contractors experience the largest rise in rates at an increase of 17.6 per cent to £1,332 per week.
Two new faces to the salary top ten have also emerged. MS Exchange, ranked 10th with a rate of £1,045, and Excel, ranked 6th with an average weekly rate of £835.
"The anomaly of Excel entering the top 10 may be because companies are now looking at their monitoring and tracking systems more closely as they prepare for e-business. The increase for MS-Exchange and Lotus Notes has been mainly due to development versus the support arena, with Domino being in greatest demand."