Integrated Service Digital Network (ISDN)
England > London
The table below provides summary statistics for contract job vacancies advertised in London requiring ISDN skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited ISDN over the 6 months leading up to 1 May 2025, comparing them to the same period in the previous two years.
| 6 months to 1 May 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | 348 | 389 | 483 |
| Rank change year-on-year | +41 | +94 | +103 |
| Contract jobs citing ISDN | 5 | 2 | 10 |
| As % of all contract jobs advertised in London | 0.040% | 0.011% | 0.037% |
| As % of the Communications & Networking category | 0.38% | 0.12% | 0.37% |
| Number of daily rates quoted | 1 | 1 | 1 |
| 10th Percentile | - | - | - |
| 25th Percentile | £538 | £663 | - |
| Median daily rate (50th Percentile) | £575 | £675 | £400 |
| Median % change year-on-year | -14.81% | +68.75% | -24.17% |
| 75th Percentile | £613 | £688 | - |
| 90th Percentile | - | - | - |
| England median daily rate | £575 | £635 | £400 |
| % change year-on-year | -9.45% | +58.75% | -20.00% |
| Number of hourly rates quoted | 1 | 0 | 0 |
| Median hourly rate | £50.00 | - | - |
| England median hourly rate | £75.00 | £63.00 | - |
| % change year-on-year | +19.05% | - | - |
All Communications and Computer Networking Skills
London
ISDN falls under the Communications and Computer Networking category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring communications or computer networking skills in London.
| Contract vacancies with a requirement for communications or computer networking skills | 1,315 | 1,719 | 2,676 |
| As % of all contract IT jobs advertised in London | 10.48% | 9.64% | 9.90% |
| Number of daily rates quoted | 838 | 1,144 | 1,885 |
| 10th Percentile | £263 | £213 | £256 |
| 25th Percentile | £400 | £350 | £425 |
| Median daily rate (50th Percentile) | £500 | £500 | £560 |
| Median % change year-on-year | - | -10.71% | +1.82% |
| 75th Percentile | £625 | £619 | £675 |
| 90th Percentile | £725 | £741 | £775 |
| England median daily rate | £500 | £490 | £525 |
| % change year-on-year | +2.04% | -6.67% | +5.00% |
| Number of hourly rates quoted | 14 | 59 | 53 |
| 10th Percentile | £24.66 | £14.48 | £20.22 |
| 25th Percentile | £25.60 | £18.36 | £22.63 |
| Median hourly rate | £43.75 | £22.00 | £46.00 |
| Median % change year-on-year | +98.86% | -52.17% | +31.43% |
| 75th Percentile | £51.50 | £41.25 | £70.00 |
| 90th Percentile | £62.65 | £60.00 | £75.00 |
| England median hourly rate | £28.00 | £40.00 | £18.82 |
| % change year-on-year | -30.00% | +112.54% | -21.29% |
ISDN
Job Vacancy Trend in London
Job postings citing ISDN as a proportion of all IT jobs advertised in London.
ISDN
Contractor Daily Rate Trend in London
3-month moving average daily rate quoted in jobs citing ISDN in London.
ISDN
Contractor Hourly Rate Trend in London
3-month moving average hourly rates quoted in jobs citing ISDN in London.
ISDN
Co-occurring Skills and Capabilities in London 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: