Synchronous Digital Hierarchy (SDH)
England > London
The table below provides summary statistics for permanent job vacancies advertised in London requiring SDH skills. It includes a benchmarking guide to the annual salaries offered in vacancies that cited SDH over the 6 months leading up to 31 May 2025, comparing them to the same period in the previous two years.
| 6 months to 31 May 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | - | - | 588 |
| Rank change year-on-year | - | - | +286 |
| Permanent jobs citing SDH | 0 | 0 | 24 |
| As % of all permanent jobs advertised in London | - | - | 0.075% |
| As % of the Communications & Networking category | - | - | 0.63% |
| Number of salaries quoted | 0 | 0 | 24 |
| 10th Percentile | - | - | - |
| 25th Percentile | - | - | £58,750 |
| Median annual salary (50th Percentile) | - | - | £80,000 |
| Median % change year-on-year | - | - | +60.00% |
| 75th Percentile | - | - | £97,500 |
| 90th Percentile | - | - | - |
| England median annual salary | £67,500 | £40,000 | £80,000 |
| % change year-on-year | +68.75% | -50.00% | +60.00% |
All Communications and Computer Networking Skills
London
SDH 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 in London.
| Permanent vacancies with a requirement for communications or computer networking skills | 1,892 | 3,252 | 3,819 |
| As % of all permanent jobs advertised in London | 14.80% | 13.53% | 11.87% |
| Number of salaries quoted | 912 | 1,985 | 2,641 |
| 10th Percentile | £33,250 | £32,750 | £32,500 |
| 25th Percentile | £42,500 | £42,500 | £42,500 |
| Median annual salary (50th Percentile) | £63,500 | £60,000 | £62,500 |
| Median % change year-on-year | +5.83% | -4.00% | - |
| 75th Percentile | £83,750 | £78,750 | £82,500 |
| 90th Percentile | £103,750 | £95,000 | £100,000 |
| England median annual salary | £45,000 | £47,500 | £50,000 |
| % change year-on-year | -5.26% | -5.00% | -4.76% |
SDH
Job Vacancy Trend in London
Job postings citing SDH as a proportion of all IT jobs advertised in London.
SDH
Salary Trend in London
3-month moving average salary quoted in jobs citing SDH in London.