Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.
| IBM AIX |
| 3 months to
16 May 2012 | Same period 2011 | Same period 2010 |
| Rank | 183 | 165 | 180 |
| Rank change year-on-year |
 -18 |  +15 |
|
| Matching contract IT job ads | 588 | 713 | 511 |
| As % of all contract IT jobs located in the UK | 0.993 % | 1.162 % | 0.928 % |
| As % of the Operating Systems category | 4.892 % | 5.614 % | 5.095 % |
| Number of daily rates quoted | 225 | 305 | 224 |
| Average daily rate | £410 | £385 | £375 |
| Average daily rate % change year-on-year | |
| 90% of contracts offered a daily rate of more than | £288 | £283 | £257 |
| 10% of contracts offered a daily rate of more than | £525 | £485 | £500 |
| UK excluding London average daily rate | £400 | £375 | £338 |
| % change year-on-year | |
| Number of hourly rates quoted | 13 | 16 | 15 |
| Average hourly rate | £41.50 | £35.25 | £34.92 |
| Average hourly rate % change year-on-year | |
| 90% of contracts offered a hourly rate of more than | £20.20 | £27.44 | £18.49 |
| 10% of contracts offered a hourly rate of more than | £47.50 | £57.50 | £48.00 |
| UK excluding London average hourly rate | £35.75 | £30.94 | £33.71 |
| % change year-on-year | |
|
|
Contract IT job ads with a match in the
Operating Systems category | 12020 | 12701 | 10029 |
| As % of all contract IT jobs located in the UK | 20.31 % | 20.70 % | 18.21 % |
| Number of daily rates quoted | 6064 | 6186 | 4456 |
| Average daily rate | £350 | £375 | £375 |
| Average daily rate % change year-on-year | |
| 90% of contracts offered a daily rate of more than | £200 | £215 | £200 |
| 10% of contracts offered a daily rate of more than | £500 | £550 | £550 |
| UK excluding London average daily rate | £325 | £324 | £306 |
| % change year-on-year | |
| Number of hourly rates quoted | 1181 | 1253 | 1038 |
| Average hourly rate | £17.50 | £16.75 | £16.00 |
| Average hourly rate % change year-on-year | |
| 90% of contracts offered a hourly rate of more than | £11.00 | £11.00 | £10.50 |
| 10% of contracts offered a hourly rate of more than | £40.00 | £37.50 | £37.50 |
| UK excluding London average hourly rate | £17.00 | £16.20 | £15.50 |
| % change year-on-year | |
