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 average contractor rates offered in IT contracts that have cited Inversion of Control over the 3 months to 4 September 2015 with a comparison to the same period in 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.

Location
3 months to
4 Sep 2015
Same period 2014 Same period 2013
Inversion of Control (IoC)
Rank 573 550 523
Rank change year-on-year
-23 -27
Contract jobs citing Inversion of Control 60 60 64
As % of all contract IT jobs located in the UK 0.10% 0.11% 0.12%
As % of the Miscellaneous category 0.32% 0.33% 0.37%
Number of daily rates quoted 56 47 56
Average daily rate
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£438 £425 £418
Average daily rate % change year-on-year
+2.94% +1.79%
90% offered a daily rate of more than £300 £325 £325
10% offered a daily rate of more than £573 £493 £600
UK excluding London average daily rate £300 £350 £350
% change year-on-year
-14.28% -
Number of hourly rates quoted 0 0 0
Average hourly rate - - -
UK excluding London average 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
18754 17991 17104
As % of all contract IT jobs located in the UK 32.09% 32.21% 32.81%
Number of daily rates quoted 11771 10808 10374
Average daily rate £425 £400 £415
Average daily rate % change year-on-year
+6.25% -3.61%
90% offered a daily rate of more than £250 £240 £250
10% offered a daily rate of more than £620 £600 £600
UK excluding London average daily rate £375 £350 £350
% change year-on-year
+7.14% -
Number of hourly rates quoted 732 749 700
Average hourly rate £21.50 £20.00 £18.95
Average hourly rate % change year-on-year
+7.50% +5.54%
90% offered a hourly rate of more than £12.00 £12.46 £12.42
10% offered a hourly rate of more than £45.00 £45.00 £43.00
UK excluding London average hourly rate £21.50 £20.00 £17.50
% change year-on-year
+7.50% +14.28%

Inversion of Control
Jobs Demand Trend

This chart provides the 3-month moving total of IT contractor jobs citing Inversion of Control within the UK as a proportion of the total demand within 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 4 September 2015.

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 27 Contract Locations

The table below looks at the demand and provides a guide to the average contractor rates quoted in IT jobs citing Inversion of Control within the UK over the 3 months to 4 September 2015. 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
(Use links below to see detailed
statistics and historical trends)
Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Average
Daily Rate
Last 3 Months
Average Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +2 60 £438 +2.94% 58
London +14 47 £495 +16.47% 20
City of London +8 5 £350 -23.49% 1
South East -31 4 £338 -3.57% 16
North East - 4 £306 - 1
Durham - 3 £325 -
Oxfordshire - 2 £300 -
Canary Wharf - 2 £550 -
North West - 2 £325 - 7
West Midlands +10 1 - - 5
East of England +6 1 £275 -
Berkshire -8 1 £375 - 1
Reading -13 1 £375 -
Grantham - 1 £300 -
Felixstowe - 1 £275 -
Sunbury-on-Thames - 1 £418 -
Warwick - 1 - -
Lincolnshire - 1 £300 -
Southport - 1 - -
Tyne and Wear - 1 £275 - 1
Surrey - 1 £418 - 2
Manchester - 1 £325 - 1
Merseyside - 1 - -
Sunderland - 1 £275 -
Warwickshire - 1 - -
East Midlands - 1 £300 - 6
Suffolk - 1 £275 -

Inversion of Control
Top 30 Related IT Skills

For the 6 months to 4 September 2015, IT contractor jobs within the UK citing Inversion of Control also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited Inversion of Control.

1 78 (63.41%) .NET
2 76 (61.79%) MVC
3 72 (58.54%) TDD
4 68 (55.28%) C#
5 63 (51.22%) SQL Server
6 58 (47.15%) Agile Software Development
7 57 (46.34%) HTML
8 56 (45.53%) CSS
9 48 (39.02%) Microsoft
10 45 (36.59%) Web Services
10 45 (36.59%) ASP.NET
10 45 (36.59%) .NET Framework
11 44 (35.77%) SQL
12 42 (34.15%) JavaScript
13 39 (31.71%) OO
13 39 (31.71%) Scrum
14 35 (28.46%) NUnit
15 34 (27.64%) Dependency Injection
16 33 (26.83%) Continuous Integration
17 32 (26.02%) Entity Framework
17 32 (26.02%) AngularJS
18 31 (25.20%) ASP.NET MVC
19 30 (24.39%) jQuery
19 30 (24.39%) WCF
20 27 (21.95%) Ajax
20 27 (21.95%) Java
21 25 (20.33%) OOP
21 25 (20.33%) Spring
22 24 (19.51%) Git (software)
23 23 (18.70%) MVVM

Inversion of Control
Top Related IT Skills by Category

For the 6 months to 4 September 2015, IT contractor jobs within the UK citing Inversion of Control also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited Inversion of Control. Up to 20 skills are shown per category.

Application Platforms
1 7 (5.69%) Apache Solr
2 6 (4.88%) Node.js
2 6 (4.88%) Tomcat
2 6 (4.88%) CMS
3 5 (4.07%) IIS
3 5 (4.07%) Apache
4 4 (3.25%) Sitecore CMS
4 4 (3.25%) Elasticsearch
5 3 (2.44%) NServiceBus
5 3 (2.44%) SharePoint
5 3 (2.44%) BizTalk Server
6 2 (1.63%) WebLogic
6 2 (1.63%) Apache Spark
6 2 (1.63%) Oracle Coherence
7 1 (0.81%) GlassFish
7 1 (0.81%) Umbraco
7 1 (0.81%) WebSphere Application Server
7 1 (0.81%) JBoss
7 1 (0.81%) WebSphere
Applications
1 10 (8.13%) MS Excel
2 7 (5.69%) MS Visio
3 3 (2.44%) MS Office
Business Applications
1 1 (0.81%) SAP Oil and Gas
1 1 (0.81%) Dynamics CRM
Cloud Services
1 3 (2.44%) Microsoft Azure
1 3 (2.44%) SaaS
2 2 (1.63%) Amazon EC2
3 1 (0.81%) Basecamp
3 1 (0.81%) Amazon AWS
Communications & Networking
1 1 (0.81%) SMTP
1 1 (0.81%) Firewall
Database & Business Intelligence
1 63 (51.22%) SQL Server
2 13 (10.57%) SQL Server 2012
3 11 (8.94%) SQL Server 2008
4 9 (7.32%) MongoDB
4 9 (7.32%) NoSQL
5 5 (4.07%) Oracle Database
6 4 (3.25%) MySQL
6 4 (3.25%) MarkLogic
6 4 (3.25%) Triplestore
6 4 (3.25%) SQL Server Reporting Services
6 4 (3.25%) SQL Server Integration Services
7 3 (2.44%) Hadoop
8 2 (1.63%) Redis
8 2 (1.63%) Riak
8 2 (1.63%) Mahout
9 1 (0.81%) SQL Server 2000
9 1 (0.81%) Relational Database
Development Applications
1 35 (28.46%) NUnit
2 24 (19.51%) Git (software)
3 19 (15.45%) Visual Studio
4 16 (13.01%) Team Foundation Server
5 12 (9.76%) TeamCity
6 10 (8.13%) Moq
7 7 (5.69%) MSTest
7 7 (5.69%) SpecFlow
8 6 (4.88%) Jenkins
8 6 (4.88%) Rhino Mocks
8 6 (4.88%) Mockito
8 6 (4.88%) Hudson
8 6 (4.88%) Build Forge
8 6 (4.88%) ProC
8 6 (4.88%) CruiseControl
9 5 (4.07%) Maven
9 5 (4.07%) JUnit
9 5 (4.07%) Octopus Deploy
9 5 (4.07%) MSBuild
10 4 (3.25%) ReSharper
General
1 22 (17.89%) Finance
2 21 (17.07%) Retail
3 8 (6.50%) Banking
4 4 (3.25%) Telecoms
4 4 (3.25%) Front Office
4 4 (3.25%) Manufacturing
5 3 (2.44%) Back Office
5 3 (2.44%) Investment Banking
6 2 (1.63%) Marketing
6 2 (1.63%) Advertising
6 2 (1.63%) Publishing
7 1 (0.81%) Electronics
7 1 (0.81%) Dutch Language
7 1 (0.81%) French Language
Job Titles
1 110 (89.43%) Developer
2 53 (43.09%) .NET Developer
3 23 (18.70%) Senior Developer
4 20 (16.26%) C# Developer
5 17 (13.82%) Android Developer
6 16 (13.01%) C# .NET Developer
7 14 (11.38%) Java Developer
8 9 (7.32%) Lead Developer
9 8 (6.50%) ASP.NET Developer
10 7 (5.69%) Senior Android Developer
11 6 (4.88%) Lead Android Developer
11 6 (4.88%) Senior Java Developer
12 5 (4.07%) Web Developer
12 5 (4.07%) Hybris Developer
13 4 (3.25%) Architect
13 4 (3.25%) Senior .NET Developer
13 4 (3.25%) C# ASP.NET Developer
13 4 (3.25%) Silverlight Developer
13 4 (3.25%) Agile .NET Developer
14 3 (2.44%) .NET Web Developer
Libraries, Frameworks & Software Standards
1 78 (63.41%) .NET
2 57 (46.34%) HTML
3 56 (45.53%) CSS
4 45 (36.59%) ASP.NET
4 45 (36.59%) Web Services
4 45 (36.59%) .NET Framework
5 32 (26.02%) Entity Framework
5 32 (26.02%) AngularJS
6 31 (25.20%) ASP.NET MVC
7 30 (24.39%) jQuery
7 30 (24.39%) WCF
8 27 (21.95%) Ajax
9 25 (20.33%) Spring
10 21 (17.07%) WPF
11 18 (14.63%) KnockoutJS
12 17 (13.82%) Unity DI Container
12 17 (13.82%) Android SDK
13 16 (13.01%) ASP.NET Web API
14 14 (11.38%) XML
15 13 (10.57%) J2EE
Miscellaneous
1 18 (14.63%) Mobile App
2 7 (5.69%) Analytical Skills
3 5 (4.07%) Derivative
3 5 (4.07%) Equity Derivative
4 4 (3.25%) Semantic Web
5 3 (2.44%) Hedge funds
6 2 (1.63%) Social Network
6 2 (1.63%) Management Information System
6 2 (1.63%) PKI
6 2 (1.63%) User Experience
7 1 (0.81%) N-Tier
7 1 (0.81%) DTV
7 1 (0.81%) Mathematics
7 1 (0.81%) Physics
7 1 (0.81%) Computer Science
7 1 (0.81%) Blog
7 1 (0.81%) Video on Demand
7 1 (0.81%) PlayStation
7 1 (0.81%) Distributed Denial-of-Service
7 1 (0.81%) Enterprise Software
Operating Systems
1 17 (13.82%) Android
2 7 (5.69%) UNIX
2 7 (5.69%) Linux
3 6 (4.88%) Windows
4 2 (1.63%) Red Hat Enterprise Linux
5 1 (0.81%) Mac OS
5 1 (0.81%) Apple iOS
5 1 (0.81%) Windows 8
5 1 (0.81%) Windows XP
Processes & Methodologies
1 76 (61.79%) MVC
2 72 (58.54%) TDD
3 58 (47.15%) Agile Software Development
4 39 (31.71%) Scrum
4 39 (31.71%) OO
5 34 (27.64%) Dependency Injection
6 33 (26.83%) Continuous Integration
7 25 (20.33%) OOP
8 23 (18.70%) MVVM
9 20 (16.26%) BDD
10 19 (15.45%) SOA
11 17 (13.82%) Unit Testing
11 17 (13.82%) Android Development
12 14 (11.38%) E-Commerce
12 14 (11.38%) AOP
13 12 (9.76%) Mentoring
14 11 (8.94%) Pair Programming
15 9 (7.32%) Kanban
16 8 (6.50%) Low Latency
16 8 (6.50%) Software Engineering
Programming Languages
1 68 (55.28%) C#
2 44 (35.77%) SQL
3 42 (34.15%) JavaScript
4 27 (21.95%) Java
5 11 (8.94%) T-SQL
6 7 (5.69%) Python
6 7 (5.69%) XAML
7 4 (3.25%) C
7 4 (3.25%) C++
7 4 (3.25%) Ruby
8 3 (2.44%) PowerShell
8 3 (2.44%) SPARQL
8 3 (2.44%) VB
8 3 (2.44%) VB6
8 3 (2.44%) PL/SQL
8 3 (2.44%) VBA
9 2 (1.63%) XQuery
9 2 (1.63%) XPath
10 1 (0.81%) PHP
10 1 (0.81%) VB.NET
Qualifications
1 6 (4.88%) Degree
2 2 (1.63%) MCP
2 2 (1.63%) Microsoft Certification
3 1 (0.81%) SC Cleared
3 1 (0.81%) Security Cleared
Quality Assurance & Compliance
1 1 (0.81%) QA
Vendors
1 48 (39.02%) Microsoft
2 14 (11.38%) Oracle
3 6 (4.88%) TIBCO
3 6 (4.88%) Infragistics
3 6 (4.88%) Twitter
4 5 (4.07%) hybris
5 4 (3.25%) Salesforce.com
5 4 (3.25%) Sitecore
5 4 (3.25%) Endeca
5 4 (3.25%) Google
6 3 (2.44%) SAP
7 2 (1.63%) Red Hat
7 2 (1.63%) Facebook
8 1 (0.81%) Atlassian