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 26 November 2025, comparing them to the same period in the previous two years.
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
707
663
837
As % of all contract IT jobs advertised in the City of London
39.04%
30.85%
31.21%
Number of daily rates quoted
514
415
549
10th Percentile
£343
£363
£312
25th Percentile
£425
£475
£475
Median daily rate (50th Percentile)
£550
£600
£600
Median % change year-on-year
-8.33%
-
-
75th Percentile
£684
£713
£725
90th Percentile
£775
£838
£825
Central London median daily rate
£550
£593
£600
% change year-on-year
-7.17%
-1.25%
+1.27%
Number of hourly rates quoted
10
2
10
10th Percentile
£17.02
£32.05
£17.00
25th Percentile
£21.40
£39.63
£17.48
Median hourly rate
£31.00
£56.00
£31.75
Median % change year-on-year
-44.64%
+76.38%
-38.35%
75th Percentile
£41.89
£76.13
£51.44
90th Percentile
£67.89
£85.95
£69.25
Central London median hourly rate
£28.00
£27.00
£26.00
% change year-on-year
+3.70%
+3.85%
-49.02%
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 Top 11 Co-Occurring Skills & Capabilities in the City of London
For the 6 months to 26 November 2025, contractor job vacancies citing AS400 also mentioned the following skills and capabilities in order of popularity.
The figures indicate the absolute number of co-occurrences and as a proportion of all contract job ads across the City of London region with a requirement for 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:
