ISA99 (Industrial Automation and Control Systems Security)
England > London
The table below provides summary statistics and contractor rates for jobs advertised in London requiring ISA99 skills. It covers contract job vacancies from the 6 months leading up to 20 February 2026, with comparisons to the same periods in the previous two years.
|
|
6 months to
20 Feb 2026 |
Same period 2025 |
Same period 2024 |
| Rank |
404 |
- |
394 |
| Rank change year-on-year |
- |
- |
+123 |
| Contract jobs citing ISA99 |
1 |
0 |
3 |
| As % of all contract jobs in London |
0.006% |
- |
0.016% |
| As % of the Quality Assurance & Compliance category |
0.034% |
- |
0.12% |
| Number of daily rates quoted |
0 |
0 |
0 |
| Median daily rate (50th Percentile) |
- |
- |
- |
| England median daily rate |
- |
- |
- |
ISA99 falls under the Quality Assurance and Compliance category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring quality assurance or compliance skills in London.
| Contract vacancies with a requirement for quality assurance or compliance skills |
2,916 |
1,952 |
2,495 |
| As % of all contract IT jobs advertised in London |
18.65% |
14.41% |
13.59% |
| Number of daily rates quoted |
1,936 |
1,201 |
1,811 |
| 10th Percentile |
£350 |
£308 |
£363 |
| 25th Percentile |
£418 |
£400 |
£450 |
| Median daily rate (50th Percentile) |
£525 |
£525 |
£550 |
| Median % change year-on-year |
- |
-4.55% |
-4.35% |
| 75th Percentile |
£638 |
£675 |
£688 |
| 90th Percentile |
£750 |
£798 |
£788 |
| England median daily rate |
£500 |
£500 |
£525 |
| % change year-on-year |
- |
-4.76% |
- |
| Number of hourly rates quoted |
38 |
28 |
57 |
| 10th Percentile |
£18.20 |
£19.44 |
£12.50 |
| 25th Percentile |
£18.95 |
£22.27 |
£19.47 |
| Median hourly rate |
£26.11 |
£37.00 |
£31.50 |
| Median % change year-on-year |
-29.43% |
+17.46% |
-10.00% |
| 75th Percentile |
£35.00 |
£79.60 |
£43.75 |
| 90th Percentile |
£81.79 |
£94.13 |
£61.75 |
| England median hourly rate |
£25.50 |
£30.99 |
£26.66 |
| % change year-on-year |
-17.70% |
+16.22% |
-23.83% |
ISA99
Job Vacancy Trend in London
Historical trend showing the proportion of contract IT job postings citing ISA99 relative to all contract IT jobs advertised in London.
ISA99
Daily Rate Trend in London
Contractor daily rate distribution trend for jobs in London citing ISA99.
ISA99
Co-Occurring Skills & Capabilities in 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:
