X.400
UK
The table below provides summary statistics for permanent job vacancies requiring X.400 skills. It includes a benchmarking guide to the annual salaries offered in vacancies that cited X.400 over the 6 months leading up to 11 August 2025, comparing them to the same period in the previous two years.
| 6 months to 11 Aug 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | 726 | - | - |
| Rank change year-on-year | - | - | - |
| Permanent jobs citing X.400 | 2 | 0 | 0 |
| As % of all permanent jobs advertised in the UK | 0.003% | - | - |
| As % of the Communications & Networking category | 0.016% | - | - |
| Number of salaries quoted | 2 | 0 | 0 |
| 10th Percentile | £50,275 | - | - |
| 25th Percentile | £51,063 | - | - |
| Median annual salary (50th Percentile) | £53,250 | - | - |
| 75th Percentile | £54,563 | - | - |
| 90th Percentile | £54,825 | - | - |
| UK excluding London median annual salary | £53,250 | - | - |
All Communications and Computer Networking Skills
UK
X.400 falls under the Communications and Computer Networking category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring communications or computer networking skills.
| Permanent vacancies with a requirement for communications or computer networking skills | 12,765 | 10,920 | 12,431 |
| As % of all permanent jobs advertised in the UK | 20.83% | 12.66% | 16.54% |
| Number of salaries quoted | 6,153 | 6,327 | 7,167 |
| 10th Percentile | £23,504 | £27,500 | £28,500 |
| 25th Percentile | £25,087 | £35,000 | £36,250 |
| Median annual salary (50th Percentile) | £31,500 | £50,000 | £52,000 |
| Median % change year-on-year | -37.00% | -3.85% | -0.95% |
| 75th Percentile | £52,500 | £65,000 | £71,250 |
| 90th Percentile | £73,750 | £80,000 | £85,391 |
| UK excluding London median annual salary | £27,250 | £45,000 | £45,000 |
| % change year-on-year | -39.44% | - | -5.26% |
X.400
Job Vacancy Trend
Job postings citing X.400 as a proportion of all IT jobs advertised.
X.400
Salary Trend
3-month moving average salary quoted in jobs citing X.400.
X.400
Top 3 Job Locations
The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing X.400 within the UK over the 6 months to 11 August 2025. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.
| Location | Rank Change on Same Period Last Year |
Matching Permanent IT Job Ads |
Median Salary Past 6 Months |
Median Salary % Change on Same Period Last Year |
Live Jobs |
|---|---|---|---|---|---|
| South East | - | 2 | £53,250 | - | 5 |
| England | - | 2 | £53,250 | - | 5 |
| UK excluding London | - | 2 | £53,250 | - | 5 |
X.400
Co-occurring Skills and Capabilities by Category
The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:
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