IBM AS/400
Central London > City of London
The table below looks at the prevalence of the term AS400 in contract job vacancies in the City of London. Included is a benchmarking guide to the contractor rates offered in vacancies that cited AS400 over the 6 months leading up to 14 October 2025, comparing them to the same period in the previous two years.
| 6 months to 14 Oct 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | 122 | 126 | 144 |
| Rank change year-on-year | +4 | +18 | +43 |
| Contract jobs citing AS400 | 3 | 5 | 1 |
| As % of all contract jobs in the City of London | 0.17% | 0.24% | 0.035% |
| As % of the Miscellaneous category | 0.44% | 0.77% | 0.11% |
| Number of daily rates quoted | 3 | 0 | 1 |
| 10th Percentile | - | - | - |
| 25th Percentile | £575 | - | £513 |
| Median daily rate (50th Percentile) | £600 | - | £525 |
| Median % change year-on-year | - | - | -8.70% |
| 75th Percentile | £675 | - | £538 |
| 90th Percentile | £705 | - | - |
| Central London median daily rate | £600 | - | £525 |
| % change year-on-year | - | - | -8.70% |
All Generic Skills
City of London
AS400 falls under the General and Transferable Skills category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring generic IT skills in the City of London.
| Contract vacancies with a requirement for generic IT skills | 681 | 649 | 907 |
| As % of all contract IT jobs advertised in the City of London | 39.41% | 30.64% | 31.70% |
| Number of daily rates quoted | 486 | 404 | 583 |
| 10th Percentile | £354 | £361 | £325 |
| 25th Percentile | £457 | £463 | £485 |
| Median daily rate (50th Percentile) | £600 | £594 | £600 |
| Median % change year-on-year | +1.01% | -1.00% | - |
| 75th Percentile | £693 | £725 | £738 |
| 90th Percentile | £800 | £838 | £830 |
| Central London median daily rate | £575 | £585 | £600 |
| % change year-on-year | -1.71% | -2.50% | +2.56% |
| Number of hourly rates quoted | 8 | 3 | 9 |
| 10th Percentile | £16.90 | - | £17.00 |
| 25th Percentile | £19.11 | - | £26.25 |
| Median hourly rate | £24.75 | £27.00 | £36.00 |
| Median % change year-on-year | -8.33% | -25.00% | -28.71% |
| 75th Percentile | £43.39 | £59.75 | £46.75 |
| 90th Percentile | £72.53 | £79.40 | £56.15 |
| Central London median hourly rate | £25.08 | £27.00 | £35.50 |
| % change year-on-year | -7.13% | -23.94% | -29.70% |
AS400
Job Vacancy Trend in the City of London
Historical trend showing the proportion of contract IT job postings citing AS400 relative to all contract IT jobs advertised in the City of London.
AS400
Daily Rate Trend in the City of London
Contractor daily rate distribution trend for jobs in the City of London citing AS400.
AS400
Hourly Rate Trend in the City of London
Contractor hourly rate distribution trend for jobs in the City of London citing AS400.
AS400
Co-Occurring Skills & Capabilities in the City of London by Category
The following tables expand on the one above by listing co-occurrences grouped by category. They cover the same employment type, locality and period, with up to 20 co-occurrences shown in each category: