Picking the right postcode does half the work on a first date. London is enormous and the wrong choice means an hour on the Northern line followed by a pub that closes at ten. These are the areas I send friends to when they want a fighting chance.
Soho, for the low-stakes drink that turns into dinner
Soho is still the best engine in London for a date that needs the option to escalate. Start at Bar Termini on Old Compton Street for a Negroni in a room the size of a phone box, then drift. If things are going well, walk five minutes to Kiln on Brewer Street and queue for the counter; if they aren't, you're already near Tottenham Court Road and can be home in twenty minutes.
The trick with Soho is to commit to walking. Don't book one place for the whole evening. Frith Street, Dean Street, and Berwick Street all have something open, and the act of moving between them gives you something to talk about that isn't your job.
Borough and Bankside, for the daylight date
Borough Market on a Saturday is too crowded to actually shop, which is exactly why it works. You can share a toastie from Kappacasein, walk it off along the Thames Path past the Globe, and end up at the Anchor or, better, the Founders Arms with a pint and the view back toward St Paul's. It is the most reliable cheap afternoon in central London.
If you want to push it later, Padella in Shad Thames does a good early bowl of pasta if you join the queue before six.
Hackney, for second dates pretending to be first dates
Not a first-first date area, but if you've already met once and want to seem more interesting than you are, head to Broadway Market on a Saturday or to the strip of Kingsland Road around Dalston Junction. Brilliant Corners does early dinner with proper sound, and the walk along the Regent's Canal toward Victoria Park gives you the kind of meandering conversation that doesn't happen across a table.
Fair warning: every other person in London Fields is also on a date. You will see at least one bad one and feel better about yours.
Marylebone, for the grown-up evening
If you're past the stage of pretending you like loud basements, Marylebone is the answer. The high street between Marylebone Road and Wigmore Street has Daunt Books, which is the most honest icebreaker in the city. Pick a section, see what they reach for, draw your conclusions. Afterwards, 108 Brasserie or the bar at the Chiltern Firehouse if you're trying, the Golden Eagle on Marylebone Lane if you're not.
Marylebone closes early by London standards, which is a feature. It forces a decision around ten: either home or onward to Fitzrovia.
Peckham, for the date you'll tell people about
Peckham works because it doesn't try. Frank's Cafe on top of the multi-storey car park on Rye Lane is open in summer and gives you the best informal skyline view in London. Below it, Bussey Building has bars and screenings most nights. From there, Levan or Kudu on Queen's Road for proper food.
The walk from Peckham Rye station to any of this is unglamorous, which is the point. If your date is charmed by Rye Lane on a Friday night, you've learned something useful about them in fifteen minutes.
A note on logistics
Whichever area you pick, check the last train. London dates die on the platform at Bank waiting for a Waterloo and City that isn't running. The Night Tube on the Victoria, Central, Jubilee, Northern and Piccadilly lines runs Friday and Saturday, which quietly makes those routes more romantic than the others. Plan your neighborhood around the line home and you'll never end an evening looking at the Citymapper app instead of the person you're with.