A full overcast sky is a softbox the size of the county. No blown highlights, no black shadow holes, no squinting subjects — every direction is workable and every hour of the day is usable, which is simply not true of sunshine.

What grey light punishes is lazy exposure and lazy composition. Two adjustments fix both:

Expose down, not up. Cameras see a bright grey sky and underexpose your subject, or you correct upwards and the sky burns to blank white. Do the opposite of instinct: keep exposure modest (a half to a full stop under the meter), let the sky hold tone, and lift shadows in the edit if needed. A pale grey sky with texture beats a white void in every frame.

Colour becomes the subject. Grey desaturates the world just enough that any strong colour detonates — a red bus, a yellow raincoat, an orange shopfront. This is the palette of most classic British colour photography for a reason: the greyness is not the absence of the picture, it is the backdrop that makes colour possible. Composing around one colour hit against grey (see the One Colour for a Month card) is the most reliable frame this country offers.

Rain empties the streets of photographers and fills them with photographs. Umbrellas turn every pedestrian into a graphic shape. Wet pavement doubles every light source. People run, huddle, share shelter with strangers, hold newspapers over their heads — behaviour appears that exists in no other conditions.

Where to stand: shelter is a shooting position, not a retreat. Shop awnings, bus stops, station entrances and covered arcades let you work dry while the weather performs in front of you. Doorway light under dark skies is naturally directional and flattering.

What to shoot: reflections (puddles flip the world; get low and the street becomes symmetrical), the moment rain starts (the scatter is thirty seconds of pure theatre), condensation on café and bus windows (people behind wet glass is a whole genre), and umbrella traffic from slightly above if you can find steps or a bridge.

Gear sense, briefly: modern cameras survive drizzle comfortably — a hand towel in the bag and a lens hood handle most of it. Keep the lens pointed slightly down between frames, wipe the front element often (one drop on the lens ruins every frame after it), and a £2 shower cap or freezer bag makes a downpour workable. Weather-sealing is a comfort, not a requirement.

British winter gives street photographers something summer cannot: night photography at 4:30pm, when the streets are still full. Commuters under sodium and LED light, shop windows glowing like stage sets, bus interiors lit like film stills — the entire after-dark genre becomes available during ordinary waking hours, with crowds. In June you would have to wait until eleven for streets already empty.

The low sun is winter's other gift. Even on clear days it never climbs, so the raking side-light photographers chase at golden hour in summer runs from mid-morning to mid-afternoon. Long shadows all day, and it pairs perfectly with the shutter drag and flash techniques from the deck.

Exposure-wise, embrace the darkness rather than correcting it: meter for the lit areas — windows, faces under lamps — and let the rest fall to black. Frost and fog are bonus conditions: fog isolates subjects by distance like a depth slider, and breath-steam gives every portrait atmosphere. Dress warmer than you think (photographers stand still more than they walk), keep a spare battery in an inside pocket since cold drains them fast, and the season is yours.

Waiting for good weather is how photography does not happen. If your practice only functions in sunshine, you have roughly one usable month a year and a hobby that mostly consists of checking forecasts. The photographers whose work you admire from this country did not wait — the British documentary tradition is grey-skied, rain-flecked and shot at teatime in December, and that is precisely its atmosphere.

So invert the forecast. Sun: fine, hard shadows, Sunny 16. Grey: soft light, colour hunting. Rain: umbrellas, reflections, shelter theatre. Dark by four: the night shift starts early. There is no bad weather for street photography in Britain. There is only weather, and a photographer either using it or not.