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Whitebirk Lostock: main bowl and smaller half bowl with a lowered offset dividing wall, 795 x 465 x 220mm, handmade white fireclay from Whitebirk's Classic Collection.
The Lostock is a Whitebirk exclusive: a main bowl with a smaller half bowl beside it, divided by a lowered wall. The small bowl keeps the tap free while the main bowl is in use, and because the sink is reversible you choose which side the half bowl sits.
At a glance
Size (W x D x H)
795 x 465 x 220mm
Internal bowl (L x W x depth)
main approx. 500 x 405 x 195mm, small approx. 205 x 405 x 195mm
Weight
58kg
Bowls
1.5 Bowl
Fitting
Apron front
Base unit
800mm
Waste
2 x 3.5"
Overflow
No overflow
Made in
Blackburn, Lancashire
Will it fit?
The Lostock measures 795 x 465 x 220mm (width x depth x height) and weighs about 58kg. Every Whitebirk sink is handmade and kiln-fired, so sizes can vary by up to 2% either way. Have your fitter measure the actual sink before cutting worktops or cabinets. As an apron-front sink it suits an 800mm base unit, and at this weight the cabinet must be reinforced or the sink supported on a frame.
What you get
Whitebirk Lostock sink, handmade in white gloss fireclay
Main bowl and smaller half bowl with a lowered offset dividing wall
Plain front
No overflow
2 x central 3.5" waste outlets, suitable for a basket strainer or a waste disposal unit
Reversible, so you choose which way round it fits
Strainers and plumbing kit are sold separately
What you also need
2 x 3.5 inch basket strainers, one per bowl. Choose the standard strainer in seven finishes or the premium lever strainer in four. The pack of 2 covers both bowls
McAlpine SSK2 double bowl space saver plumbing kit for the trap and pipework
The matching strainer and plumbing kit are shown under You May Also Need below.
Specification
Collection
Classic Collection
Bowls
Main bowl and smaller half bowl with a lowered offset dividing wall
Dimensions (W x D x H)
795 x 465 x 220mm
Internal bowl (L x W x depth)
main approx. 500 x 405 x 195mm, small approx. 205 x 405 x 195mm
Weight
58kg
Front
Plain
Overflow
No overflow
Waste outlets
2 x central 3.5"
Reversible
Yes
Fitting
Apron front
Material
Handmade fireclay with antibacterial glaze
Colour
White gloss
Made in
Blackburn, Lancashire, England
Lostock, Fluted, Reeded or Linear Lostock?
All four share the same body: 795 x 465 x 220mm, 58kg, a main bowl and a smaller half bowl divided by a lowered wall, two central 3.5 inch wastes and no overflow, and all four are reversible. Only the front changes.
Model
Front
Collection
Lostock
Plain
Classic Collection
Fluted Lostock
Fluted, on both sides
Rill Collection
Reeded Lostock
Reeded, on both sides
Rill Collection
Linear Lostock
Linear, on both sides
Horizon Collection
Caring for your sink
Clean with warm water, a mild washing-up liquid and a soft cloth, then rinse and wipe dry. Avoid abrasive pads, steel wool and harsh chemicals, and don't put very hot pans straight into the bowl. Whitebirk recommend Astonish Oven & Cookware cleaner for marks left by metal pans.
Guarantee
Every Whitebirk fireclay sink comes with a lifetime warranty from Whitebirk Sink Company. Ask us for the full terms.
Frequently asked questions
How big is the bowl inside?
The main bowl measures approx. 500 x 405 x 195mm and the small bowl approx. 205 x 405 x 195mm inside (length x width x depth). These are approximate figures, as every Whitebirk sink is handmade.
What size base unit does the Lostock need?
At 795mm wide, the Lostock suits an 800mm base unit. Handmade fireclay can vary by up to 2%, so your fitter should measure the sink itself before cutting the cabinet or worktop.
How heavy is the Lostock?
About 58kg. At this weight the base unit needs reinforcing, or the sink should sit on a support frame. Whitebirk recommend professional installation.
Which waste do I need?
The Lostock has 2 x 3.5 inch outlets, so it takes two 3.5 inch basket strainers, standard or premium lever, or a waste disposal unit. It has no overflow, so no overflow kit is needed.
What does reversible mean on the Lostock?
You can fit the sink either way round, so the smaller bowl sits on whichever side suits your tap and drainer.
Can I undermount or inset it instead?
Yes. Whitebirk say any of their kitchen sinks can be inset or undermounted with a support cradle underneath. The Understone Collection is designed specifically for inset and undermount fitting.
Who makes Whitebirk sinks?
Whitebirk Sink Company, a division of Darwen Terracotta Limited. Every sink is handmade and kiln-fired at their factory in Blackburn, Lancashire, and carries a lifetime warranty.
About Whitebirk
Fireclay sink making began in Whitebirk, Lancashire in the late 1800s. Whitebirk Sink Company still makes every sink by hand at its Blackburn factory, and names each one after a Lancashire village, valley or landmark. The company describes itself as the last British-owned manufacturer of traditional fireclay sinks.
Why buy from British Bathroom Company?
We have supplied bathrooms and kitchens since 1998 and sell genuine Whitebirk sinks and accessories. Not sure which strainer, grid or plumbing kit goes with your sink? Ask us before you order and we will check it for you.
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DELIVERY
We aim to deliver all orders within 3-7 working days, dependant on the size of your order or item(s)
Express delivery is available on some items, feel free to contact ourselves to check if your desired product is available for express delivery
Small parcels will be delivered via DX and tracking is provided once dispatched
Large items are delivered via Stop Start or Palletways, details of delivery are provided via email and tracking is also available. Please note most large deliveries are KERB SIDE ONLYalthough some companies will aim to get the goods as close to the door as possible.
Returns are accepted within 28 days of receipt of your goods, however, you must request your return within the first 14 days. You can activate a return request in your account, for more details please visit the "Delivery & Returns" page
Christmas Period Any orders placed from 15th December 2025 maybe delayed until the week commencing 5th January 2026. If you need your order sooner, please contact us before purchase to see when your delivery can take place.
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