Flower baskets in London: English wickerwork, imported stems
In England, weaving osier — Salix viminalis, the basket willow — was called wickerwork, and through the eighteenth and nineteenth centuries osier beds grew along the rivers that supplied it. That history belongs to the basket itself; the flowers inside are almost all imported, so flower baskets in London are chosen by stem, by colour and by size rather than by the weave.
Wickerwork with English roots: what fills a London basket
Close to nine in ten cut flowers sold in Britain cross a border first, and that supply line decides which months suit a London basket best. The Netherlands supplies most of the volume, while Kenya grows the roses that travel on to London florists, so a rose basket built from a Kenyan stem is an everyday choice here rather than an exception to look for.
Lilies are grown under glass, which keeps Dutch greenhouse lilies in the catalogue in every month, and a lily basket can be ordered whatever the season. A British peony is a shorter story: home fields cut it only from late April to June, so outside that stretch a peony basket is built from stock grown further afield rather than from an English garden.

Red, white or lilies: choosing the flower and the colour
Victorian flower dictionaries gave each colour a meaning: a red rose stood for passionate love, pink for a gentler affection, and white for purity, and those three remain the easiest shorthand for a basket's colour today. The books never agreed on a single list even then, so these readings work as a starting point rather than a rule, useful when the colour needs to say more than the card itself does. A basket named 101 White Ecuadorian Roses in a Basket can be chosen on colour alone this way, without needing to know anything more about what's arranged inside it.
A lily basket needs one more check before it goes to a flat with a cat. Every part of the lily is toxic to cats, the pollen and even the water in the vase included, so a household with a cat is safer with a pink or white basket built around roses instead.
Hotels, hospitals, the calendar and London's weather are covered in the flowers in London article; colour and flower are what this basket decides.
Fifty stems or a hundred and one: how large a basket to send
A lily with a large head needs only a few stems to read as a full arrangement on its own, and florists use that as a rough guide rather than a fixed rule when building something larger. The Giant Mixed Basket with Lilies sits at the top of that scale, built up from several such stems gathered into one wide arrangement rather than measured out stem by stem.
A hundred roses is a different kind of size altogether. The Basket of 101 Misty Bubble Roses is counted in stems, and the name says nothing more about what's arranged inside it.
Britain never adopted the custom of giving flowers in odd numbers only; a dozen is as ordinary here as any other count, a point covered in full in how London counts its roses.

Every basket at JFLOO is put together only after the order is placed, and the florist photographs the finished arrangement before the courier sets off, so a colour or a stem can still be swapped from that photo if something needs changing. The delivery slot is shown in the basket's own listing, and flower basket delivery in London is covered in full on the delivery page.
Flower baskets in London are easiest to choose by what matters most for that address. The baskets sorted by flower group the range by bloom, and the baskets by colour sort it by shade. The baskets by size run from compact arrangements to the giant mixed basket.