The table below looks at the prevalence of the term Inversion of Control in IT contracts advertised across the UK. Included is a guide to the contractor rates offered in IT contracts that have cited Inversion of Control over the 3 months to 8 December 2016 with a comparison to the same period over the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

3 months to
8 Dec 2016
Same period 2015 Same period 2014
Inversion of Control (IoC)
Rank 569 582 539
Rank change year-on-year
+13 -43
Contract jobs citing Inversion of Control 52 62 94
As % of all contract IT jobs located in the UK 0.10% 0.11% 0.17%
As % of the Miscellaneous category 0.32% 0.34% 0.52%
Number of daily rates quoted 43 48 71
Median daily rate £380 £350 £415
Median daily rate % change year-on-year
+8.57% -15.66%
90% offered a daily rate of more than £305 £300 £300
10% offered a daily rate of more than £545 £483 £529
UK excluding London median daily rate £337 £325 £361
% change year-on-year
+3.69% -9.97%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

The following table is for comparison with the above and provides statistics for the entire Miscellaneous category in contract jobs advertised across the UK.

Miscellaneous Category
UK
Contract IT job ads with a match in the
Miscellaneous category
16196 18398 17909
As % of all contract IT jobs located in the UK 32.54% 33.32% 31.72%
Number of daily rates quoted 10494 11565 11376
Median daily rate £430 £425 £408
Median daily rate % change year-on-year
+1.17% +4.29%
90% offered a daily rate of more than £238 £250 £235
10% offered a daily rate of more than £625 £620 £600
UK excluding London median daily rate £380 £385 £363
% change year-on-year
-1.29% +6.20%
Number of hourly rates quoted 575 788 744
Median hourly rate £19.50 £20.00 £17.00
Median hourly rate % change year-on-year
-2.50% +17.64%
90% offered a hourly rate of more than £12.00 £12.35 £11.00
10% offered a hourly rate of more than £45.00 £45.06 £42.50
UK excluding London median hourly rate £18.53 £19.50 £16.84
% change year-on-year
-5.00% +15.79%

Inversion of Control
Jobs Demand Trend

The demand trend of contract jobs citing Inversion of Control as a proportion of all IT contracts with a match in the Miscellaneous category.

Inversion of Control Jobs Demand Trend in the UK

Inversion of Control
Daily Rate Trend

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing Inversion of Control within the UK.

Inversion of Control Daily Rate Trend in the UK

Inversion of Control
Daily Rate Histogram

This chart provides a histogram of daily rates quoted in contract IT jobs citing Inversion of Control within the UK over the 3 months to 8 December 2016.

Inversion of Control Daily Rate Histogram in the UK

Inversion of Control
Hourly Rate Trend

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing Inversion of Control within the UK.

Inversion of Control Hourly Rate Trend in the UK

Inversion of Control
Top 22 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Inversion of Control within the UK over the 3 months to 8 December 2016. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location
(Click see detailed
statistics and trends)
Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +20 52 £380 +8.57% 43
London -6 32 £500 +23.07% 11
South East +39 8 £300 - 8
City of London -5 8 £538 +51.40% 3
Brighton +12 7 £300 -
East Sussex +12 7 £300 -
Yorkshire +15 4 £350 +7.69% 1
North West - 4 £375 - 8
Manchester - 4 £375 - 4
Sheffield -9 3 £350 -
South Yorkshire -10 3 £350 -
West Midlands - 2 - - 4
East of England - 2 £325 - 4
Stoke-on-Trent - 2 - - 3
Ipswich - 2 £325 - 1
Suffolk - 2 £325 - 1
Staffordshire - 2 - - 3
West Yorkshire +20 1 - -
Canary Wharf - 1 £475 -
Surrey - 1 £400 -
Leeds - 1 - -
Leatherhead - 1 £400 -

Inversion of Control
Top 30 Related IT Skills

For the 6 months to 8 December 2016, IT contractor jobs citing Inversion of Control also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads with a requirement for Inversion of Control.

1 79 (66.39%) .NET
2 77 (64.71%) C#
3 76 (63.87%) MVC
4 67 (56.30%) SQL
5 58 (48.74%) SQL Server
6 57 (47.90%) Agile Software Development
7 49 (41.18%) Finance
8 46 (38.66%) T-SQL
9 43 (36.13%) JavaScript
10 42 (35.29%) TDD
10 42 (35.29%) jQuery
11 37 (31.09%) ASP.NET
12 34 (28.57%) Scrum
12 34 (28.57%) Git (software)
12 34 (28.57%) Entity Framework
13 33 (27.73%) .NET Framework
14 32 (26.89%) Dependency Injection
15 30 (25.21%) HTML
15 30 (25.21%) Java
15 30 (25.21%) Spring
15 30 (25.21%) Twitter Bootstrap
15 30 (25.21%) Unity DI Container
16 29 (24.37%) REST
17 27 (22.69%) Razor View Engine
17 27 (22.69%) ASP.NET MVC 5
17 27 (22.69%) Continuous Integration
17 27 (22.69%) CSS
18 25 (21.01%) VBA
18 25 (21.01%) SQL Server Analysis Services
18 25 (21.01%) WCF

Inversion of Control
Top Related IT Skills by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 12 (10.08%) Tomcat
2 10 (8.40%) Jetty
3 8 (6.72%) IIS
4 4 (3.36%) Apache Spark
5 3 (2.52%) NServiceBus
6 2 (1.68%) Apache
6 2 (1.68%) ArcGIS
6 2 (1.68%) CMS
6 2 (1.68%) Confluence
6 2 (1.68%) Drupal
6 2 (1.68%) GeoServer
6 2 (1.68%) JBoss
6 2 (1.68%) WebLogic
6 2 (1.68%) WebSphere
6 2 (1.68%) WebSphere Application Server
7 1 (0.84%) BizTalk Server
7 1 (0.84%) GlassFish
7 1 (0.84%) WebLogic Integration
7 1 (0.84%) WebLogic Portal
7 1 (0.84%) WebSphere Process Server
Business Applications
1 1 (0.84%) Oracle BPM
1 1 (0.84%) RMDS
Cloud Services
1 14 (11.76%) Amazon AWS
1 14 (11.76%) Microsoft Azure
2 4 (3.36%) Amazon EC2
2 4 (3.36%) Amazon S3
2 4 (3.36%) AWS CloudFormation
3 1 (0.84%) IaaS
Communications & Networking
1 8 (6.72%) HTTP
2 3 (2.52%) Internet
3 1 (0.84%) SSL
Database & Business Intelligence
1 58 (48.74%) SQL Server
2 25 (21.01%) SQL Server Analysis Services
3 24 (20.17%) SQL Server Integration Services
3 24 (20.17%) SQL Server Reporting Services
4 20 (16.81%) NoSQL
5 11 (9.24%) MongoDB
6 6 (5.04%) MySQL
6 6 (5.04%) PostgreSQL
6 6 (5.04%) SQLite
7 5 (4.20%) Hadoop
8 4 (3.36%) Amazon DynamoDB
8 4 (3.36%) Data Warehouse
8 4 (3.36%) Relational Database
9 3 (2.52%) MOLAP
9 3 (2.52%) RavenDB
9 3 (2.52%) RDBMS
9 3 (2.52%) SQL Server 2008
10 2 (1.68%) DB2
10 2 (1.68%) GIS
10 2 (1.68%) SQL Server 2012
Development Applications
1 34 (28.57%) Git (software)
2 22 (18.49%) Jenkins
3 19 (15.97%) Maven
4 12 (10.08%) Team Foundation Server
5 11 (9.24%) JUnit
6 10 (8.40%) Visual Studio
7 9 (7.56%) Build Forge
7 9 (7.56%) CruiseControl
7 9 (7.56%) Hudson
7 9 (7.56%) Moq
7 9 (7.56%) Subversion
8 7 (5.88%) Gradle
9 6 (5.04%) NUnit
9 6 (5.04%) TeamCity
9 6 (5.04%) TestNG
10 5 (4.20%) Cucumber
10 5 (4.20%) JIRA
10 5 (4.20%) SpecFlow
11 4 (3.36%) Grunt
11 4 (3.36%) gulp
General
1 49 (41.18%) Finance
2 11 (9.24%) Banking
3 9 (7.56%) Back Office
4 3 (2.52%) Front Office
4 3 (2.52%) Investment Banking
5 2 (1.68%) Games
5 2 (1.68%) Marketing
Job Titles
1 97 (81.51%) Developer
2 48 (40.34%) .NET Developer
3 31 (26.05%) C# Developer
3 31 (26.05%) SQL Developer
4 27 (22.69%) Java Developer
5 19 (15.97%) C# .NET Developer
6 17 (14.29%) Architect
7 13 (10.92%) Senior Developer
8 9 (7.56%) .NET Architect
8 9 (7.56%) ASP.NET MVC Developer
9 8 (6.72%) Front End Developer (Client-Side Developer)
9 8 (6.72%) Senior Java Developer
9 8 (6.72%) Solutions Architect
10 7 (5.88%) J2EE Developer
10 7 (5.88%) Java/J2EE Developer
10 7 (5.88%) Senior .NET Developer
10 7 (5.88%) Technical Architect
11 6 (5.04%) .NET Technical Architect
11 6 (5.04%) Full Stack Developer
12 5 (4.20%) Core Java Developer
Libraries, Frameworks & Software Standards
1 79 (66.39%) .NET
2 42 (35.29%) jQuery
3 37 (31.09%) ASP.NET
4 34 (28.57%) Entity Framework
5 33 (27.73%) .NET Framework
6 30 (25.21%) HTML
6 30 (25.21%) Spring
6 30 (25.21%) Twitter Bootstrap
6 30 (25.21%) Unity DI Container
7 29 (24.37%) REST
8 27 (22.69%) ASP.NET MVC 5
8 27 (22.69%) CSS
8 27 (22.69%) Razor View Engine
9 25 (21.01%) AngularJS
9 25 (21.01%) WCF
10 24 (20.17%) ASP.NET MVC
10 24 (20.17%) JSON
11 23 (19.33%) Web Services
12 21 (17.65%) Hibernate
13 19 (15.97%) XML
Miscellaneous
1 17 (14.29%) Visualisation
2 12 (10.08%) Computer Science
3 10 (8.40%) Mobile App
4 8 (6.72%) Analytical Skills
5 4 (3.36%) Derivative
5 4 (3.36%) User Experience
6 3 (2.52%) N-Tier
7 2 (1.68%) Equities
8 1 (0.84%) Animation
8 1 (0.84%) Blackberry
8 1 (0.84%) DataPower
8 1 (0.84%) Enterprise Software
8 1 (0.84%) Fintech
8 1 (0.84%) Foreign Exchange (FX)
8 1 (0.84%) iPhone
8 1 (0.84%) Statistics
8 1 (0.84%) W3C
Operating Systems
1 19 (15.97%) Windows
2 11 (9.24%) Linux
2 11 (9.24%) Unix
3 2 (1.68%) Android
4 1 (0.84%) Apple iOS
4 1 (0.84%) Windows Phone
4 1 (0.84%) Windows Server
Processes & Methodologies
1 76 (63.87%) MVC
2 57 (47.90%) Agile Software Development
3 42 (35.29%) TDD
4 34 (28.57%) Scrum
5 32 (26.89%) Dependency Injection
6 27 (22.69%) Continuous Integration
7 21 (17.65%) SOLID
8 18 (15.13%) BDD
9 16 (13.45%) Mentoring
10 15 (12.61%) Data Validation
10 15 (12.61%) Data Visualisation
10 15 (12.61%) Unit Testing
10 15 (12.61%) Validation
10 15 (12.61%) Web Development
11 10 (8.40%) Multithreading
12 9 (7.56%) Budgeting and Forecasting
12 9 (7.56%) OO
12 9 (7.56%) SDLC
13 8 (6.72%) Asynchronous Programming
13 8 (6.72%) E-Commerce
Programming Languages
1 77 (64.71%) C#
2 67 (56.30%) SQL
3 46 (38.66%) T-SQL
4 43 (36.13%) JavaScript
5 30 (25.21%) Java
6 25 (21.01%) VBA
7 8 (6.72%) PowerShell
8 5 (4.20%) TypeScript
9 4 (3.36%) Bash Shell
9 4 (3.36%) C
9 4 (3.36%) Python
10 3 (2.52%) VB
10 3 (2.52%) VB.NET
10 3 (2.52%) VB6
11 2 (1.68%) ES6
11 2 (1.68%) PHP
12 1 (0.84%) PL/SQL
12 1 (0.84%) R
12 1 (0.84%) Ruby
12 1 (0.84%) XPath
Qualifications
1 14 (11.76%) Degree
2 4 (3.36%) Security Cleared
3 3 (2.52%) BPSS Clearance
Quality Assurance & Compliance
1 9 (7.56%) QA
2 5 (4.20%) Disclosure Scotland
System Software
1 3 (2.52%) Docker
2 1 (0.84%) Virtual Machines
Systems Management
1 3 (2.52%) Opscode Chef
2 1 (0.84%) Ansible
2 1 (0.84%) yum
Vendors
1 14 (11.76%) Oracle
2 11 (9.24%) TIBCO
3 10 (8.40%) Microsoft
4 4 (3.36%) IBM
5 2 (1.68%) ESRI
5 2 (1.68%) Infragistics
5 2 (1.68%) Syncfusion
5 2 (1.68%) Telerik
5 2 (1.68%) Xamarin
6 1 (0.84%) Apple
6 1 (0.84%) Caplin
6 1 (0.84%) Kony
6 1 (0.84%) MuleSoft
6 1 (0.84%) Sitecore