KF.SocialSo this page sorts the options by the two things that actually decide whether they will work for you: what they cost, and how long they take before you know anyone. If you live here, the slow ones are better and cheaper. If you are in London for work and leave in eleven days, most of the list is unavailable to you and it is worth saying so rather than recommending it anyway.
The slow ones, which are also the best ones
Run clubs, climbing walls, five a side, choirs
Free or close to it, and the most reliable thing on this page if you have the months. They work because you turn up at the same time every week and see the same faces, and after about the fifth time somebody suggests a drink afterwards. That is the mechanism, and nothing shortens it. London has an enormous amount of this and you do not need an app to find it.
The catch is the fifth time. On a six-week engagement you might get four.
Interest communities and groups
Same mechanism, indoors. Book clubs, language exchanges, board game nights, maker spaces. Cheap, slow, excellent. Again dependent on turning up repeatedly.
Meetup
The best directory of the above, and it is free to join with most listed events free to attend. It is worth knowing two things before you rely on it. Meetup now sells a member subscription, Meetup+, and its own help centre calls the free tier "the limited free plan" (help.meetup.com, read 4 September 2026); the full attendee list, full member profiles, the "Who will be there" feature and unrestricted messaging sit behind it. Organisers can also set dues for their own group, a separate charge, flagged by a "Request to join" button.
The other thing is size. Browsing London listings on 4 September 2026, the attendee counts on the first screen ran 74, 100, 163, 187, 228, 234, 239, 263, 312 and 546. Meetup says sizes range from large to small and they do, but the first page of London is often a room rather than a table, and a room of 200 is a hard place to meet anyone if you arrived alone.
For range and for spending nothing, Meetup beats everything else here and it is not close. If you have three months in London, start there and stop reading.
The app ones
Friend-matching apps
Bumble For Friends is the best known: you swipe through profiles, and when two people swipe right you can chat, with either person free to send the first message (bumble.com, read 7 September 2026). It is free to download with optional paid extras, and any member with two or more matches can create a group plan for coffee, dining, live music or a games night.
The documented pain with this shape is the gap between a chat and a plan. Matching is easy and quick, and a chat becomes an actual evening far less often than it feels like it should. If you are here temporarily, that gap is the whole problem, because the chat outlasts your stay.
Vairi is a London and New York app that inverts it: one introduction at a time after an interview of about ten questions, with your name and photo hidden until you both agree to reveal them, and prices published plainly in pounds (vairi.app, read 7 September 2026). One person rather than a table, which suits some people much better.
Subscription dinner matching
Timeleft runs London and seats you at a small dinner described as "five new faces over good food", which is six at the table, grouped by age range, personality and language. It is a subscription, in one, three or six month periods, and no price appears on its site or help centre; it is shown during sign-up. Food and drinks are paid at the venue. Subscriptions are generally non-refundable once a new period has started and renew automatically (timeleft.com and help.timeleft.com, read 2 and 4 September 2026).
Good value if you will use it most weeks. Poor value for a fortnight.
The fast ones
Supper clubs
A host cooks one fixed menu for paying guests on a named date and you buy a ticket. The food is usually the best you will eat on this page. The problem for a short stay is that good sittings sell out weeks ahead, which is exactly the horizon a work trip does not have.
A matched table you book for one night
This is what KF.Social does, in London only, and here it is in the same detail as everything above.
Tuesday, Wednesday and Thursday, sitting at 19:00, in Soho, Shoreditch and Clapham. A table laid for six, and a seventh booking opens another table rather than being refused. 15 pounds for the seat, shown before you pay, and your own food and drinks at the restaurant. No subscription. Booking gates on being 18 or over and on paying.
Booking closes six hours before, which is when the restaurant lands. Who you are sitting with lands an hour before, with the group chat. Three hours before, we decide whether the table runs against a floor of four seats, and if it does not run everyone is refunded in full.
Cancelling: card refund outside 72 hours, KF Points from 72 to 24 hours at 1,000 points to the pound, nothing inside 24 hours.
The table is assembled. Anyone you have asked to avoid is never seated with you, and that is absolute. Beyond that it is built for shared interests, close age bands and a balanced room, weighted hard against repeating people you have met or restaurants you have eaten at.
Which to pick, honestly
Living here, or staying six months or more. Run club or sport, plus Meetup. Free, slow, and it produces the friendships that last. Nothing on this page beats it and you should not pay anybody for it.
Here for two to eight weeks. The repetition options will not have time to work. Something that puts you at a table on a named night is the only shape that fits the calendar, whether that is a supper club you can still get a ticket for or a booked seat.
Here on and off, repeatedly. The subscription models start making sense, and so does joining one community properly and treating it as the thing you come back to.
Not sure you want a table at all. One-to-one introductions are a gentler starting point than six people, and being bored at dinner with one person is a smaller evening to lose.