The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for PhD qualifications. Included is a benchmarking guide to the contractor rates offered over the 3 months to 28 June 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

PhD
London / City of London
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 161 159 195
Rank change year-on-year -2 +36  
Contract jobs citing PhD 5 6 10
As % of all contract IT jobs advertised in the City of London 0.15% 0.18% 0.17%
As % of the Qualifications category 1.06% 1.07% 1.31%
Number of daily rates quoted 5 5 9
Median daily rate £650 £725 £650
Median daily rate % change year-on-year -10.34% +11.53%  
90% offered a daily rate of more than £565 £550 £475
10% offered a daily rate of more than £813 £738 £775
UK excluding London median daily rate £550 £425 £550
% change year-on-year +29.41% -22.72%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - £46.50

PhD is in the academic qualifications and professional certifications category. The following table is for comparison with the above and provides summary statistics for all academic qualifications and professional certifications cited in contract job vacancies advertised in the City of London.

Academic & Professional Certification
City of London
Contract job vacancies requiring academic qualifications or professional certifications 470 560 763
As % of all contract IT job vacancies advertised in the City of London 14.40% 16.63% 13.29%
Number of daily rates quoted 682 916 1100
Median daily rate £475 £475 £438
Median daily rate % change year-on-year - +8.57%  
90% offered a daily rate of more than £270 £286 £240
10% offered a daily rate of more than £675 £625 £638
UK excluding London median daily rate £400 £375 £375
% change year-on-year +6.66% -  
Number of hourly rates quoted 22 9 36
Median hourly rate £18.70 £20.00 £24.50
Median hourly rate % change year-on-year -6.51% -18.36%  
90% offered a hourly rate of more than £14.00 £16.13 £15.75
10% offered a hourly rate of more than £21.30 £95.50 £48.75
UK excluding London median hourly rate £32.50 £28.50 £22.50
% change year-on-year +14.03% +26.66%  

PhD
Job Vacancy Trend in the City of London

Job postings citing PhD as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for PhD in the City of London

PhD
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing PhD in the City of London.

Contractor daily rate trend for PhD in the City of London

PhD
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing PhD in the City of London over the 3 months to 28 June 2017.

Contractor daily rate histogram for PhD in the City of London

PhD
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing PhD in the City of London.

Contractor hourly rate trend for PhD in the City of London

For the 6 months to 28 June 2017, IT contractor jobs citing PhD also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the City of London region with a requirement for PhD.

1 12 (75.00%) Machine Learning
2 11 (68.75%) Mathematics
2 11 (68.75%) Python
3 9 (56.25%) R
4 7 (43.75%) Statistics
4 7 (43.75%) Computer Science
5 5 (31.25%) Natural Language Processing
5 5 (31.25%) SQL
5 5 (31.25%) Finance
5 5 (31.25%) Big Data
5 5 (31.25%) Apache Spark
6 4 (25.00%) Analytics
6 4 (25.00%) Artificial Intelligence
6 4 (25.00%) C++
6 4 (25.00%) Java
6 4 (25.00%) Operations Research
6 4 (25.00%) Degree
7 3 (18.75%) Scala
7 3 (18.75%) Predictive Modelling
7 3 (18.75%) Business Intelligence
7 3 (18.75%) MATLAB
7 3 (18.75%) Neural Network
7 3 (18.75%) Analytical Skills
7 3 (18.75%) Algorithms
7 3 (18.75%) Statistical Modelling
8 2 (12.50%) Google Cloud Platform
8 2 (12.50%) Prototyping
8 2 (12.50%) Quantitative Research
8 2 (12.50%) Logistics
8 2 (12.50%) Google

PhD
Co-occurring IT Skills in the City of London 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 5 (31.25%) Apache Spark
2 2 (12.50%) SAS
3 1 (6.25%) Apache Pig
Applications
1 2 (12.50%) S-PLUS
2 1 (6.25%) Weka
Cloud Services
1 2 (12.50%) Google Cloud Platform
1 2 (12.50%) Microsoft Azure
Communications & Networking
1 1 (6.25%) Internet
Database & Business Intelligence
1 5 (31.25%) Big Data
2 2 (12.50%) Data Mining
2 2 (12.50%) Hadoop
3 1 (6.25%) Amazon Redshift
3 1 (6.25%) Apache Cassandra
3 1 (6.25%) Apache Hive
3 1 (6.25%) HBase
3 1 (6.25%) KDB
3 1 (6.25%) MongoDB
3 1 (6.25%) NoSQL
3 1 (6.25%) QlikView
3 1 (6.25%) Spotfire
Development Applications
1 1 (6.25%) Git (software)
General
1 5 (31.25%) Finance
2 2 (12.50%) Front Office
2 2 (12.50%) Retail
Job Titles
1 13 (81.25%) Data Scientist
2 4 (25.00%) Senior Data Scientist
3 1 (6.25%) Analyst
3 1 (6.25%) Consultant
3 1 (6.25%) Data Analyst
3 1 (6.25%) Data Analytics Analyst
3 1 (6.25%) Developer
3 1 (6.25%) Junior
3 1 (6.25%) Junior Consultant
3 1 (6.25%) Machine Learning Consultant
3 1 (6.25%) Machine Learning Scientist
3 1 (6.25%) Qualitative Analyst
3 1 (6.25%) Quantitative Analyst
3 1 (6.25%) Quantitative Developer
Libraries, Frameworks & Software Standards
1 5 (31.25%) Natural Language Processing
2 1 (6.25%) AngularJS
2 1 (6.25%) D3.js
2 1 (6.25%) ggplot
2 1 (6.25%) MLlib
2 1 (6.25%) NumPy
2 1 (6.25%) scikit-learn
Miscellaneous
1 7 (43.75%) Computer Science
2 3 (18.75%) Algorithms
2 3 (18.75%) Analytical Skills
3 2 (12.50%) Hedge funds
4 1 (6.25%) Fintech
4 1 (6.25%) Foreign Exchange (FX)
4 1 (6.25%) Grid Computing
Operating Systems
1 1 (6.25%) Linux
Processes & Methodologies
1 12 (75.00%) Machine Learning
2 11 (68.75%) Mathematics
3 7 (43.75%) Statistics
4 4 (25.00%) Analytics
4 4 (25.00%) Artificial Intelligence
4 4 (25.00%) Operations Research
5 3 (18.75%) Business Intelligence
5 3 (18.75%) Neural Network
5 3 (18.75%) Predictive Modelling
5 3 (18.75%) Statistical Modelling
6 2 (12.50%) Asset Management
6 2 (12.50%) Data Modelling
6 2 (12.50%) E-Commerce
6 2 (12.50%) Logistics
6 2 (12.50%) Predictive Analytics
6 2 (12.50%) Prototyping
6 2 (12.50%) Quantitative Research
6 2 (12.50%) Risk Management
6 2 (12.50%) Visualisation
7 1 (6.25%) Computer Vision
Programming Languages
1 11 (68.75%) Python
2 9 (56.25%) R
3 5 (31.25%) SQL
4 4 (25.00%) C++
4 4 (25.00%) Java
5 3 (18.75%) MATLAB
5 3 (18.75%) Scala
6 2 (12.50%) C
7 1 (6.25%) JavaScript
7 1 (6.25%) Shell Script
Qualifications
1 4 (25.00%) Degree
2 2 (12.50%) Postgraduate
Vendors
1 2 (12.50%) Google
1 2 (12.50%) Microsoft
2 1 (6.25%) Splunk
2 1 (6.25%) Tableau