The next dated tech events in London are AI & Big Data Expo Global (3 to 4 February 2027, Olympia), Tech Show London (10 to 11 March 2027, ExCeL), SXSW London (24 to 29 May 2027, Shoreditch) and, in June, London Tech Week (7 to 11 June), Infosecurity Europe (8 to 10 June) and The AI Summit London (9 to 10 June). Big Data LDN follows on 22 to 23 September 2027. Every one of those dates comes from the organiser’s own site. This guide from The London Report puts ten of London’s biggest tech events in calendar order, adds the community meetups worth knowing, and says which events from our 2024 list we could no longer confirm.
For AI-specific events and the data on London’s AI sector, see our guide to AI and machine learning events in London. For the background on June’s flagship, see London Tech Week. Dates change, so confirm with the organiser before you book.
Key takeaways
- Next up: AI & Big Data Expo Global, 3 to 4 February 2027 at Olympia (organiser), then Tech Show London, 10 to 11 March 2027 at ExCeL (organiser).
- SXSW London returns to Shoreditch on 24 to 29 May 2027, with passes on sale at 50% off from £210 for a limited time (organiser).
- June is the busiest month: London Tech Week (7 to 11 June), Infosecurity Europe (8 to 10 June) and The AI Summit London (9 to 10 June) all fall in the same week.
- Three events have run for 2026 but have no 2027 dates yet: Reset Connect London, Connected Britain and DevOpsDays London.
- Several events from our 2024 list, including Women in Business & Tech Expo, have no 2026 or 2027 dates that we could confirm.
The London tech calendar at a glance
The ten events below are shown by the month of their latest or next confirmed London dates. June dominates because London Tech Week, Infosecurity Europe and The AI Summit fall in the same week, and Reset Connect London ran in the same month in 2026.
The 10 events, in calendar order
| Event | Latest or next dates | Where | Status |
|---|---|---|---|
| AI & Big Data Expo Global | 3 to 4 February 2027 | Olympia London | Confirmed |
| Tech Show London | 10 to 11 March 2027 | ExCeL London | Confirmed |
| SXSW London | 24 to 29 May 2027 | Shoreditch | Confirmed; passes on sale |
| London Tech Week | 7 to 11 June 2027 | Olympia (7 to 9 June) and across London | Confirmed; register interest |
| Infosecurity Europe | 8 to 10 June 2027 | ExCeL London | Confirmed; register interest |
| The AI Summit London | 9 to 10 June 2027 | Tobacco Dock | Confirmed; register interest |
| Big Data LDN | 22 to 23 September 2027 | Olympia London | Confirmed; register interest |
| Reset Connect London | 23 to 24 June 2026 | ExCeL London | 2027 not found |
| Connected Britain | 9 to 10 September 2026 | ExCeL London | 2027 not found |
| DevOpsDays London | 17 September 2026 | Imperial College London | 2027 not found |
1. AI & Big Data Expo Global (February 2027)
The 2027 edition runs on 3 and 4 February at Olympia London. The agenda lists tracks such as AI Leadership, Enterprise AI, AI Builders, Data & Analytics, Future AI, AI Developer and Physical AI, and labels some tracks free and others gold (AI & Big Data Expo Global). We cover it in more detail in our AI and machine learning events in London guide.
2. Tech Show London (March 2027)
Tech Show London is on 10 and 11 March 2027 at ExCeL London, with five co-located events: Cloud & AI Infrastructure, DevOps Live, Cloud & Cyber Security Expo, Big Data & AI World and Data Centre World. The organiser describes it as five tracks and more than 300 sessions, and says one ticket gives access to all five events (Tech Show London). It is a good fit if you work in infrastructure, DevOps or security.
3. SXSW London (May 2027)
SXSW London returns to Shoreditch from 24 to 29 May 2027, six days of music, film, tech and culture. The organiser says passes are on sale at 50% off, from £210, for a limited time, and that conference submissions close on 12 November (SXSW London).
4. London Tech Week (June 2027)
London Tech Week runs from 7 to 11 June 2027. The expo and content stages are at Olympia on 7 to 9 June, and a fringe programme runs across London on 7 to 11 June. The organiser reports more than 31,600 attendees in 2026 (London Tech Week). See our page on London Tech Week for the background.
5. Infosecurity Europe (June 2027)
Europe’s cyber security event returns to ExCeL London on 8 to 10 June 2027. The organiser’s site lists SANS Institute workshops, a leaders programme, a cyber startup programme, an OWASP Gen AI Summit and a Women in Cybersecurity programme (Infosecurity Europe).
6. The AI Summit London (June 2027)
The AI Summit London is on 9 and 10 June 2027 at Tobacco Dock, with registration of interest open. The 2026 edition was its 10th (The AI Summit London).
7. Big Data LDN (September 2027)
Big Data LDN describes itself as the UK’s leading data, analytics and AI conference and exhibition. It is on 22 and 23 September 2027 at Olympia London, and you can register interest on the organiser’s site (Big Data LDN).
8. Reset Connect London (June 2026, 2027 not yet found)
Reset Connect London, the flagship event of London Climate Action Week, ran on 23 and 24 June 2026 at ExCeL London. It was listed as free to attend (ExCeL London). We found no 2027 dates.
9. Connected Britain (September 2026, 2027 not yet found)
Connected Britain, run by Terrapinn, took place on 9 and 10 September 2026 at ExCeL London and was listed as a hybrid event (ExCeL London; techUK). We found no 2027 dates.
10. DevOpsDays London (September 2026, 2027 not yet found)
DevOpsDays London is a community-organised conference. The 2026 edition was on 17 September at the City and Guilds Building, Imperial College London, after the 2025 edition at another Imperial building and the 2024 edition at the QEII Centre (DevOpsDays). We found no 2027 dates.
Meetups and community events
Conferences are only part of the picture. London also has regular community meetups, and many are free. Check each group’s own page for current dates, as schedules change.
- AI Tinkerers London: hands-on builder meetups with live demos. Its site says most chapters meet monthly, though frequency varies (AI Tinkerers London).
- London Java Community: described in a WeAreDevelopers guide as holding weekly meetups on Thursdays (WeAreDevelopers). The guide is undated, so check the group’s page.
- London Machine Learning Meetup: described in the same guide as a monthly meetup with remote participation options (WeAreDevelopers).
- JavaScript London: described in the guide as meeting every couple of months (WeAreDevelopers).
- Find more: search Meetup, Luma and Eventbrite for your language or tool, such as Python, Kubernetes or product management.
What happened to the events on our 2024 list
Our 2024 version named eight events. Five of them (London Tech Week, Big Data LDN, DevOpsDays, Connected Britain and Reset Connect London) still ran and are covered above. For the other three we could not confirm current London dates.
| Event in our 2024 list | What we found on 11 November 2026 |
|---|---|
| London Tech Week | Runs 7 to 11 June 2027 (organiser) |
| Big Data LDN | Runs 22 to 23 September 2027 at Olympia (organiser) |
| DevOpsDays London | 2026 edition on 17 September at Imperial College; no 2027 dates found (organiser) |
| Connected Britain | 2026 edition on 9 to 10 September at ExCeL; no 2027 dates found (ExCeL) |
| Reset Connect London | 2026 edition on 23 to 24 June at ExCeL; no 2027 dates found (ExCeL) |
| Women in Business & Tech Expo | Past editions ran in October (2022 to 2024 at ExCeL), but we found no confirmed 2026 or 2027 dates (IBTimes). UK Black Business Week & Show, 12 to 17 October 2026 at ExCeL, is a separate event (ExCeL) |
| Responsible AI Summit | No current London edition confirmed, so removed |
| FuturePMO London | No current London edition confirmed, so removed |
How to choose a London tech event
- Want the broadest view of UK tech? London Tech Week in June.
- Work in cloud, DevOps or security? Tech Show London in March, Infosecurity Europe in June, or DevOpsDays when 2027 dates are announced.
- Work in data or AI? AI & Big Data Expo in February, The AI Summit in June or Big Data LDN in September.
- Want culture and tech together? SXSW London in May.
- Want to start small or save money? Try a community meetup, and check which tracks or tickets at the big shows are free.
Making the most of a tech event
- Register early. Early-bird offers, such as SXSW London’s limited-time 50% pass discount, can cut costs.
- Plan your agenda. Large shows run several tracks at once, so choose sessions before you arrive.
- Think about careers. If you are job hunting, see our guide to top technology companies to work for in London.
- Think about the market. Information and communication had the UK’s highest high-growth rate in 2024, which we cover in our guide to the top industries in London.
Conclusion
London’s tech calendar is full, and most of the big events have confirmed 2027 dates. We will update this page as the other organisers announce theirs. For more from The London Report, see our technology section.
FAQs about London’s best technology events and meetups
What are the best technology events in London?
The biggest with confirmed 2027 dates are AI & Big Data Expo Global (3 to 4 February), Tech Show London (10 to 11 March), SXSW London (24 to 29 May), London Tech Week (7 to 11 June), Infosecurity Europe (8 to 10 June), The AI Summit London (9 to 10 June) and Big Data LDN (22 to 23 September) (London Tech Week; Tech Show London; Big Data LDN).
When is London Tech Week 2027?
7 to 11 June 2027. The expo and content stages are at Olympia on 7 to 9 June, and the fringe programme runs across London (London Tech Week).
When is SXSW London 2027?
24 to 29 May 2027 in Shoreditch (SXSW London).
When is Big Data LDN 2027?
22 to 23 September 2027 at Olympia London (Big Data LDN).
When is Infosecurity Europe 2027?
8 to 10 June 2027 at ExCeL London (Infosecurity Europe).
Are there free tech events in London?
Some. Reset Connect London was listed as free in 2026 (ExCeL London), the AI & Big Data Expo agenda labels some tracks free (AI & Big Data Expo), and many community meetups are free. Check each event’s ticket types.
What happened to Women in Business & Tech Expo?
We found no confirmed 2026 or 2027 dates. Past editions ran in October at ExCeL (IBTimes). Check the organiser for updates.
Where can I find tech meetups in London?
AI Tinkerers London runs builder meetups (AI Tinkerers London), and Meetup, Luma and Eventbrite list groups for most languages and tools.
Where can I read about London’s AI events?
See our guide to AI and machine learning events in London.
Editor’s note: what changed in this update
On 11 November 2026 we rewrote this page. The 2024 version listed events with 2024 dates and prices that are now out of date, used a general Wikipedia link, and made claims about cost and size that we could not verify. We replaced it with event dates checked on organiser pages, calendar charts and tables, a meetups section and an audit of the events we removed, and swapped the stock images for licensed photos. We kept our link to the London Tech Week page.
Sources
- AI & Big Data Expo Global; Tech Show London; SXSW London; London Tech Week
- Infosecurity Europe; The AI Summit London; Big Data LDN
- ExCeL London: Reset Connect London 2026; ExCeL London: Connected Britain 2026; techUK: Connected Britain 2026; DevOpsDays London 2026
- AI Tinkerers London; WeAreDevelopers: tech meetups in London (undated)
- IBTimes: Women in Business & Tech Expo; ExCeL London: UK Black Business Week & Show 2026
Disclaimer
Event dates, venues and prices change. This guide reflects what we could verify on 11 November 2026 and is not a booking service. Check with each organiser before you travel or buy tickets.
Last updated: 11 November 2026
