The first table below looks at the prevalence of the term Inversion of Control in IT contracts advertised for the London region. Included is a guide to the average contractor rates offered in IT contracts that have cited Inversion of Control over the 3 months to 21 May 2013 with a comparison to the same period in the previous 2 years. The second table is for comparison and provides aggregates for all terms in our Miscellaneous category for the London region.

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
21 May 2013
Same period 2012 Same period 2011
Inversion of Control (IoC)
Rank 362 371 353
Rank change year-on-year
+9 -18
Contract jobs citing Inversion of Control 27 34 77
As % of all contract IT jobs located in London 0.123% 0.126% 0.251%
As % of the Miscellaneous category 0.371% 0.392% 0.664%
Number of daily rates quoted 24 32 69
Average daily rate £500 £510 £400
Average daily rate % change year-on-year
-1.96% +27.50%
90% offered a daily rate of more than £325 £353 £325
10% offered a daily rate of more than £575 £600 £700
UK excluding London average daily rate £350 £350 £380
% change year-on-year
- -7.89%
Number of hourly rates quoted 0 0 1
Average hourly rate - - £38.00
UK excluding London average hourly rate - - -
All of the Miscellaneous Category
London
Contract IT job ads with a match in the
Miscellaneous category
7287 8670 11603
As % of all contract IT jobs located in London 33.08% 32.13% 37.83%
Number of daily rates quoted 5064 5888 7838
Average daily rate £475 £475 £550
Average daily rate % change year-on-year
- -13.63%
90% offered a daily rate of more than £275 £283 £325
10% offered a daily rate of more than £625 £625 £650
UK excluding London average daily rate £350 £345 £340
% change year-on-year
+1.44% +1.47%
Number of hourly rates quoted 167 211 195
Average hourly rate £23.50 £22.50 £21.00
Average hourly rate % change year-on-year
+4.44% +7.14%
90% offered a hourly rate of more than £15.00 £13.50 £11.50
10% offered a hourly rate of more than £54.00 £52.50 £50.00
UK excluding London average hourly rate £22.00 £23.00 £26.50
% change year-on-year
-4.34% -13.20%
Inversion of Control
England

Inversion of Control
Jobs Demand Trend

This chart provides a 3-month moving total of IT contractor jobs citing Inversion of Control across the London region as a proportion of the total demand within the Miscellaneous category.

London Inversion of Control Jobs Demand Trend

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 across the London region.

London Inversion of Control Daily Rate Trend

Inversion of Control
Daily Rate Histogram

This chart provides a histogram of daily rates quoted in contract IT jobs citing Inversion of Control across the London region over the 3 months to 21 May 2013.

London Inversion of Control Daily Rate Histogram

Inversion of Control
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 London region over the 3 months to 21 May 2013. 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 each for more statistics)
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
City of London +18 14 £500 -1.96%
Inversion of Control
England

Inversion of Control
Top 30 Related IT Skills

For the 6 months to 21 May 2013, IT contractor jobs across the London region 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 44 (88.00%) C#
2 43 (86.00%) .NET
3 31 (62.00%) SQL Server
4 30 (60.00%) MVC
5 29 (58.00%) WPF
6 27 (54.00%) SQL
7 25 (50.00%) OO
7 25 (50.00%) WCF
7 25 (50.00%) NHibernate
8 23 (46.00%) Front Office
9 22 (44.00%) Unity DI Container
10 20 (40.00%) Scrum
10 20 (40.00%) ASP.NET
11 19 (38.00%) Banking
11 19 (38.00%) Spring.NET
12 17 (34.00%) Multithreading
12 17 (34.00%) TDD
13 15 (30.00%) Lucene
13 15 (30.00%) WebSphere
13 15 (30.00%) .NET Remoting
13 15 (30.00%) MySQL
13 15 (30.00%) MSMQ
13 15 (30.00%) MS Excel
13 15 (30.00%) WebSphere MQ
13 15 (30.00%) Open Source
13 15 (30.00%) Rhino Mocks
13 15 (30.00%) Memory Management
14 14 (28.00%) Continuous Integration
15 13 (26.00%) Silverlight
15 13 (26.00%) Agile Software Development

Inversion of Control
Top Related IT Skills by Category

For the 6 months to 21 May 2013, IT contractor jobs across the London region 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 Development
1 43 (86.00%) .NET
2 29 (58.00%) WPF
3 25 (50.00%) WCF
3 25 (50.00%) NHibernate
4 22 (44.00%) Unity DI Container
5 20 (40.00%) ASP.NET
6 19 (38.00%) Spring.NET
7 15 (30.00%) Lucene
7 15 (30.00%) WebSphere
7 15 (30.00%) .NET Remoting
8 13 (26.00%) Silverlight
9 12 (24.00%) StructureMap
9 12 (24.00%) ADO.NET Entity Framework
10 11 (22.00%) .NET Framework
11 10 (20.00%) jQuery
12 9 (18.00%) Spring
13 8 (16.00%) JSON
13 8 (16.00%) XML
13 8 (16.00%) Ninject
13 8 (16.00%) REST
Application Platforms
1 15 (30.00%) MSMQ
1 15 (30.00%) WebSphere MQ
2 6 (12.00%) Documentum
3 5 (10.00%) Sitefinity
3 5 (10.00%) CMS
4 4 (8.000%) TIBCO EMS
5 2 (4.000%) Umbraco
5 2 (4.000%) Kentico
Applications
1 15 (30.00%) MS Excel
Business Applications
1 4 (8.000%) RMDS
Communications & Networking
1 6 (12.00%) HTTP
Database & Business Intelligence
1 31 (62.00%) SQL Server
2 15 (30.00%) MySQL
3 4 (8.000%) InterSystems Cache
3 4 (8.000%) NoSQL
4 3 (6.000%) SQLite
5 1 (2.000%) SQL Server 2008
Development Applications
1 15 (30.00%) Rhino Mocks
2 9 (18.00%) NUnit
3 7 (14.00%) Team Foundation Server
4 6 (12.00%) TeamCity
4 6 (12.00%) NMock
4 6 (12.00%) MSBuild
5 3 (6.000%) MbUnit
5 3 (6.000%) MSTest
5 3 (6.000%) PhoneGap
5 3 (6.000%) Appcelerator Titanium
5 3 (6.000%) Visual Studio
6 2 (4.000%) Selenium
6 2 (4.000%) SpecFlow
7 1 (2.000%) Eclipse
7 1 (2.000%) JUnit
7 1 (2.000%) TestNG
7 1 (2.000%) jMock
General
1 23 (46.00%) Front Office
2 19 (38.00%) Banking
3 9 (18.00%) Finance
4 6 (12.00%) Back Office
5 3 (6.000%) Investment Banking
5 3 (6.000%) Marketing
6 2 (4.000%) Retail
6 2 (4.000%) Games
Job Titles
1 48 (96.00%) Developer
2 23 (46.00%) .NET Developer
3 15 (30.00%) C# Developer
4 7 (14.00%) Agile C# Developer
5 6 (12.00%) C# .NET Developer
6 4 (8.000%) Java Developer
6 4 (8.000%) Senior Developer
7 3 (6.000%) Mobile Developer
7 3 (6.000%) WPF Developer
7 3 (6.000%) Lead Developer
7 3 (6.000%) C# ASP.NET Developer
8 2 (4.000%) Senior Java Developer
8 2 (4.000%) Analyst Developer
8 2 (4.000%) ASP.NET Developer
8 2 (4.000%) C# Web Developer
8 2 (4.000%) Analyst
8 2 (4.000%) Web Developer
8 2 (4.000%) Front Office Developer
8 2 (4.000%) Agile .NET Developer
9 1 (2.000%) UI Programmer
Miscellaneous
1 15 (30.00%) Open Source
2 6 (12.00%) RIA
3 4 (8.000%) Hedge funds
4 2 (4.000%) Derivative
4 2 (4.000%) Foreign Exchange (FX)
5 1 (2.000%) SWIFT
5 1 (2.000%) Fixed Income
5 1 (2.000%) Grid Computing
5 1 (2.000%) Client/Server
5 1 (2.000%) N-Tier
Operating Systems
1 8 (16.00%) Windows
2 3 (6.000%) Apple iOS
2 3 (6.000%) Android
3 2 (4.000%) UNIX
3 2 (4.000%) Linux
4 1 (2.000%) Solaris
Processes & Methodologies
1 30 (60.00%) MVC
2 25 (50.00%) OO
3 20 (40.00%) Scrum
4 17 (34.00%) Multithreading
4 17 (34.00%) TDD
5 15 (30.00%) Memory Management
6 14 (28.00%) Continuous Integration
7 13 (26.00%) Agile Software Development
8 11 (22.00%) Dependency Injection
8 11 (22.00%) Unit Testing
9 10 (20.00%) MVVM
10 7 (14.00%) OOD
11 6 (12.00%) Extreme Programming
11 6 (12.00%) BDD
12 5 (10.00%) Domain-Driven Design
13 4 (8.000%) Data Modelling
13 4 (8.000%) RAD
13 4 (8.000%) Complex Event Processing
14 2 (4.000%) E-Commerce
14 2 (4.000%) SOA
Programming Languages
1 44 (88.00%) C#
2 27 (54.00%) SQL
3 10 (20.00%) Java
4 5 (10.00%) C++
5 1 (2.000%) JavaScript
5 1 (2.000%) T-SQL
5 1 (2.000%) Scala
Vendors
1 12 (24.00%) Oracle
2 11 (22.00%) Microsoft
3 4 (8.000%) TIBCO
3 4 (8.000%) Reuters
3 4 (8.000%) Bloomberg
3 4 (8.000%) 29West
4 1 (2.000%) Infragistics
4 1 (2.000%) Google