Last updated: July 2026. A working grower’s guide to Western International Market in Southall: the trading hours, parking tariffs and site rules as published by the market and the London Borough of Hounslow, who buys there and why the exotic and speciality trade matters, a worked consignment example built on Defra’s current wholesale price data, and a readiness checklist for a first consignment. Every figure is either linked to a primary source or clearly labelled as an assumption. General information, not regulated business advice.

Western International is west London’s wholesale fruit and vegetable market, and for a grower it is the most specialised of the London markets: a compact overnight market whose traders built their business on the capital’s Asian, African, Caribbean and Mediterranean produce trade. If the crop in question is coriander, methi, pak choi, dudhi, chillies or any of the lines the multicultural retail and restaurant trade buys daily, this is the market where that buyer base is concentrated. This guide covers what the market is, what it costs to use, and what the current published prices say a consignment is actually worth.

What Western International is

The market is owned and managed by the London Borough of Hounslow and sits on Hayes Road in Southall, UB2 5XJ, about 400 metres from Junction 3 of the M4 and close to Heathrow.[1][2] Its lineage runs back to the old Brentford Market of the 1880s; traders moved to the purpose-built Western International site in 1974, and in 2008 the market moved again into new buildings roughly a hundred metres from the old ones, which makes it one of the more modern wholesale market estates in the country.[1]

Around 50 wholesale traders are listed in the market’s own directory, selling fruit, vegetables and herbs, with in-season, organic and exotic lines the operator itself leads on.[3][4] The market’s customers are the greengrocers, ethnic food retailers, market stall holders, restaurants and caterers of west and south-west London, and the trade the market is best known for is exactly the one its location serves: fresh produce for communities whose cooking does not revolve around the supermarket category list.

One recent investment worth knowing about, because it says something about the site’s future: Hounslow has installed what it describes as the largest roof-mounted solar array of any UK local authority on the market’s roof, with battery storage powering nearly half the site.[1] Councils do not do that to buildings they plan to close.

Trading hours and the shape of the night

The wholesale market trades Monday to Saturday, opening at 11:45pm and running to around 8:30am, and is closed on Sundays; individual traders’ hours vary, and the market’s own advice is to phone your supplier before travelling.[2] The Sunday market that operates in the car park is a separate retail operation run by an outside firm and has nothing to do with the wholesale trade.[5]

That 11:45pm opening makes Western International an overnight market in the same rhythm as New Spitalfields at Leyton: produce loaded in the evening, landed around midnight, sold through the small hours, with the floor thinning as the morning wears on. A consignment that misses the early trade sells into a quieter market, so the delivery slot agreed with the salesman is the commitment the whole run is planned around.

What it costs to get in and out

The market publishes its parking tariff in full, enforced by number-plate recognition: £2.50 for under 30 minutes, £3.50 for 30 minutes to an hour, £5.50 for one to three hours, £10.50 for three to five hours, and £50.50 beyond five hours.[6] Annual buyer’s and supplier’s passes cost £125 each from the Market Manager’s office.[6] As at Leyton, the shape of the tariff is a message: deliver, unload and clear the site, because a lorry parked through the morning gets expensive.

Site rules for anyone attending in person: a hi-viz vest must be worn at all times, and children under 16 are not permitted on site.[5] There is no published entry fee for pedestrians; most traders take card payments, and there is no standard price list because prices vary by trader and by day, which is the nature of a wholesale floor.[5]

Who you actually sell to

The mechanics are the same as at every UK wholesale market, and they are covered in full in our UK wholesale markets guide: you sell to one wholesaler business, run by a salesman, and unless you have agreed otherwise in writing you should assume the consignment is sale or return, with the grower bearing the risk of a slow morning. Commission, payment terms and deductions are negotiated per relationship, there is no published tariff anywhere in the market system, and the written confirmation before the first pallet leaves the farm is what stands between you and a dispute you cannot win.

What is specific to Western International is the category mix. A grower of speciality herbs, oriental brassicas, chillies or bunched lines has more competing buyers per square metre here than the raw trader count suggests, because the traders specialise. The UK marketing standards for fresh fruit and vegetables still apply to graded lines and are worth printing for the packing shed,[7] but a good part of this market’s trade runs on lines where presentation, freshness and bunch count matter more than a Class I certificate.

What the prices actually are: a worked example on Defra data

Defra publishes average wholesale prices for home-grown horticultural produce, collected from the national wholesale markets: Birmingham, Manchester, Bristol and London, where the London collection point is either New Spitalfields or Western International itself.[8] It is updated fortnightly, so always check the current release rather than the snapshot below.

In the week 27 release (published 6 July 2026), bunched coriander averaged £2.16 per kilogram at national wholesale markets, with a usual range of £1.00 to £6.00 — the widest proportional spread of any vegetable line in the release. Pak choi averaged £3.10 per kilogram (range £1.60 to £3.60), spring onions 42p per kilogram bunched, and iceberg lettuce 72p a head for comparison with the commodity trade.[8]

Here is what that means for a consignment. Take a Thames Valley or Vale of Evesham grower with a weekly cut of bunched coriander and pak choi. The volumes, haulage and commission below are assumptions for illustration; the prices are Defra’s.

• Consignment: 400kg coriander and 600kg pak choi per week (assumption)
• Achieved prices: Defra week 27 averages of £2.16/kg and £3.10/kg[8] — gross £864 + £1,860 = £2,724
• Salesman commission at an assumed 10 per cent: £272
• Haulage, assumed £180 for a short M4-corridor run
• Packaging, bands and labels, assumed £150
• Net to grower: about £2,122 per week

The honest reading of that arithmetic is that speciality lines are where a market like this earns its place in a grower’s channel mix: the per-kilogram prices carry the haulage in a way that 72p iceberg does not. The equally honest reading of the £1.00 to £6.00 coriander range is that the spread is enormous, and where in that range your consignment lands depends on the day’s supply and on the salesman relationship — which is why the first-season calibration matters more here than on commodity crops. How wholesale returns compare with contracted supermarket supply is worked through in our supermarket contracts versus wholesale pricing guide.

Getting there

The market is at Hayes Road, Southall, UB2 5XJ, 400 metres from Junction 3 of the M4, with parking for private and commercial vehicles.[2] Without a vehicle, Hayes and Harlington station is a 20-minute walk or 5-minute drive, and the 203, 120, 140, 90 and H37 buses serve the area.[2] Trading enquiries go to the market management team on 020 8583 2160 or the tenants’ association on 020 8867 5050.[2]

Hauliers should note the site is inside the London Low Emission Zone, which covers most of Greater London, runs 24 hours a day and is separate from the ULEZ; lorries over 3.5 tonnes need to meet the Euro VI standard or pay the LEZ charge. Check the specific vehicle on Transport for London’s LEZ pages before pricing the run.[9]

A first-consignment checklist for Western International

Six things to do before the first pallet travels.

Visit on a trading night. The market’s own advice is to ring ahead, and that applies doubly to a first visit: arrive in the small hours, wear the hi-viz, walk the floor and talk to the traders who handle your category.[2][5]

Choose the wholesaler deliberately. The market’s trader directory lists every business with contact details — shortlist by category before you go.[4] Take references from other growers where you can.

Agree the terms in writing: firm price or sale or return, commission, payment window, deductions. Email confirmation before anything is cut for the run.

Check the current Defra wholesale price release for your lines so you know the published average and range before the price conversation.[8]

Plan the logistics around the 11:45pm opening: agreed delivery slot, LEZ-compliant vehicle, and out before the parking tariff climbs.[2][6][9]

Treat the first season as calibration. On speciality lines with wide price spreads, the relationship that gets your bunches sold at the top of the range rather than the bottom is built over months of consistent, punctual supply.

The bottom line

Western International is the smallest of the three London wholesale produce markets and the most sharply specialised, with a modern estate, published tariffs, a motorway junction on its doorstep and a landlord investing in the site rather than eyeing the exit. For commodity vegetables the bigger floors at Leyton and Nine Elms offer more buyers; for speciality, ethnic and bunched lines, this is the market whose customer base wants exactly what you grow. Do the night visit, write the terms down, and let the Defra price series keep the conversation honest.

Further reading

This guide sits alongside our UK Wholesale Markets 2026 guide to New Covent Garden and Birmingham, which covers the salesman relationship, commission and sale-or-return conventions in full, our New Spitalfields Market 2026 guide, our UK Supermarket Contracts vs Wholesale Pricing 2026 guide, and our UK Direct Sales and Farm Shop 2026 guide.