How many data science internships are there in London right now?
Today 41 of the 57 finance, consulting and tech firms our record follows for data and AI internships in London have a listing up, with 74 London roles between them.
The firm table below gives each firm's state this season, and the newest roles show the latest London postings with the day we first saw each.
Source: Jorb AI's record, checked 8 Nov 2026
When do data science internships in London open?
Our record dates this round of London data and AI internships from 1 June 2026, and since then 50 of the 57 firms it follows here have posted.
Of those, 16 firms are no longer listed. Each firm sets its own closing date: Barclays gives 27 November 2026 for its 2027 Customer and Digital Data and Analytics Summer Internship Programme in London, and says the vacancy may close earlier due to application volumes.
Sources: Jorb AI's record · Barclays careers site, 2027 Customer and Digital - Data and Analytics Summer Internship Programme London, checked 8 Nov 2026
How long is a data science summer internship in London?
The 2027 London data internships checked here, at G-Research and Barclays, each run for 10 weeks over the summer.
G-Research's Data Science Internship, in Central London, runs from 21 June to 27 August 2027. Barclays' 2027 Customer and Digital Data and Analytics Summer Internship Programme and its Client Data and Engineering Group Summer Internship Programme 2027 are both 10-week programmes in London, with its hub at Canary Wharf, between June and August 2027.
Sources: G-Research careers site, Data Science Internship · Barclays careers site, 2027 Customer and Digital - Data and Analytics Summer Internship Programme London · Barclays careers site, Client Data and Engineering Group Summer Internship Programme 2027 London, checked 8 Nov 2026
Who can apply for a data science internship in London?
Each firm sets who can apply: some take any current student in a quantitative subject, others only students in their penultimate year.
G-Research's Data Science Internship takes a current undergraduate, master's or PhD student in a quantitative subject. Barclays' 2027 Customer and Digital Data and Analytics Summer Internship Programme takes students in their penultimate year of university who graduate in 2028. Its Client Data and Engineering Group programme takes penultimate-year students from any academic background, and says data analysis or programming experience is beneficial but not required.
Sources: G-Research careers site, Data Science Internship · Barclays careers site, 2027 Customer and Digital - Data and Analytics Summer Internship Programme London · Barclays careers site, Client Data and Engineering Group Summer Internship Programme 2027 London, checked 8 Nov 2026
What does a data analyst internship in London involve?
In the London data internships checked here, interns work hands-on with data: analysing it, building outputs from it and, at G-Research, creating new datasets for research.
Barclays' Customer and Digital Data and Analytics interns work as Advanced Analytics Analysts, running hypothesis-driven analysis on customer, product and channel data and building programming, modelling and data visualisation skills. Its Client Data and Engineering Group interns analyse complex datasets, build dashboards and contribute to AI and machine learning use cases across Markets, Banking and Technology. G-Research's data science interns explore, enrich and create datasets for research and help build data science tooling.
Sources: Barclays careers site, 2027 Customer and Digital - Data and Analytics Summer Internship Programme London · Barclays careers site, Client Data and Engineering Group Summer Internship Programme 2027 London · G-Research careers site, Data Science Internship, checked 8 Nov 2026