📢 Call for Papers deadline: September 29, 2026
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Information aggregated automatically. Verify all dates, locations, and pricing on the official conference website before making arrangements.
Apidays London is an in-person conference in London, U.K. focused on GraphQL, API, Backend. The event gathers software engineers and technologists for a day of talks, workshops, and peer networking in 2026. Attendees gain exposure to emerging trends, best practices, and real-world case studies relevant to modern software development. The conference takes place in London, U.K..
Apidays London 2026 takes place Sep 30 – Oct 1, 2026 in London, U.K..
Apidays London 2026 is an in-person event.
The Call for Papers is open — submissions close on September 29, 2026.
Travel questions? See Good to know in the travel guide below.
London at the end of September is settling into autumn, with highs near eighteen degrees, earlier evenings and the city fully back at work. The technology and financial-services worlds overlap heavily here, which shapes the audience at any API-focused gathering. The practical advantage of the city for a short visit is the Underground: nearly everything worth seeing sits within a half-hour of the central zones, and the river provides an easy orientation line.
Heathrow (LHR) connects by Elizabeth line to Paddington and central London in around thirty to forty minutes, or by Piccadilly line for less. Gatwick (LGW) uses the Gatwick Express to Victoria in thirty minutes. Stansted, Luton and London City serve other routes. Eurostar arrives at St Pancras from Paris, Brussels and Amsterdam.
Skip the taxi queue — pre-book a fixed-price airport transfer with Welcome Pickups. Exploring beyond the city? compare rental cars on Auto Europe.
Coverage across London is comprehensive and most Underground stations and tunnels now carry mobile signal. Visitors from outside the United Kingdom will find a prepaid data eSIM avoids post-Brexit roaming charges that many European carriers reintroduced. Set up an eSIM with Airalo before you board and you're online the moment you land.
British Museum. Free to enter, in Bloomsbury, with the Rosetta Stone, the Assyrian reliefs and the Sutton Hoo material as the obvious anchors. Timed entry slots should be reserved online even though admission costs nothing. Two hours forces hard choices; late afternoon is quieter than the morning rush.
South Bank and Tate Modern. A continuous riverside walk from Westminster to Tower Bridge passes the National Theatre, Borough Market and the converted Bankside power station holding Tate Modern. The gallery is free and its tenth-floor viewing level looks straight across to St Paul's. Allow half a day for the whole stretch. Tickets on Go City →
Greenwich. Reached by Thames Clipper river bus in about forty-five minutes from central piers, with the Royal Observatory, the Cutty Sark and the National Maritime Museum around a park. The observatory hill gives the best long view back toward Canary Wharf. The boat journey is half the point. Tickets on Tiqets →
Sky Garden. A free public garden and viewing terrace at the top of the Fenchurch Street tower in the City, booked online in advance in timed slots. Slots open a few weeks ahead and disappear quickly. Photo identification is checked at security. Half an hour to an hour is typical.
What is the best way in from Heathrow?
The Elizabeth line reaches Paddington in about thirty minutes and continues across central London. The Piccadilly line is slower but cheaper and serves more central stations directly.
How do I pay for the Underground?
Tap a contactless bank card or phone at the gates. Fares cap automatically each day and week, so a separate Oyster card is unnecessary for a short visit.
What is the weather like in late September?
Daytime highs of sixteen to nineteen degrees Celsius with a real chance of rain and cool evenings. A light waterproof layer is the sensible packing choice.
Travel notes written for Apidays London attendees. Links marked above are affiliate links — we may earn a commission at no cost to you. Verify schedules and opening hours on official websites before you travel.
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