UK’s specialist internal door supplier

Internal doors that fit first time,
delivered in 3–5 days.*

Oak, white primed, glazed and FD30 fire-rated doors in every standard UK size — measured, checked and packed by people who fit doors for a living.

From£89per door
Shop all internal doors Not sure of your size?
3–5 day delivery*Free over £500
14-day returnsNo quibble
4.9 / 5from 53 reviews
Pre-finished internal oak Worcester door with clear glass, fitted in a bright hallway
  • Premium graded timberAmerican white oak, kiln-dried
  • 3–5 working days*Free on orders over £500
  • Secure checkoutKlarna, PayPal, Apple Pay
  • Real door expertsMon–Fri, 9am–5pm

Browse the range

Find your door by style

Six ranges, every one available in all standard UK sizes and in fire-rated FD30 where marked.

Pre-finished internal oak Worcester door in a living room

Internal Oak Doors

84 designs · from £89
 Shaker 4 panel white primed internal door in a hallway

White Primed Doors

61 designs · from £65
 Suffolk Pattern 10 pre-finished oak door with clear etched glass

Glazed Doors

47 designs · from £129
 Shaker Pattern 10 FD30 fire door in oak

FD30 Fire Doors

38 designs · from £145
 Glazed oak Palermo door pair

Door Pairs & Folding

29 designs · from £320

Best-selling internal doors

View all doors

Buy with confidence

Not sure what size you need?

Measure the door you already have — not the frame — then tell us the width. We’ll convert imperial to metric, confirm the thickness you need and take you straight to doors that fit.

Most common mistake: ordering a 35mm door for a fire opening. Any door on a protected escape route must be 44mm FD30. If you’re unsure, call us before you order.

Door size finder

Three questions, ten seconds.

Show doors that fit

Certified & compliant

FD30 fire doors

Shop our range of FD30 internal fire doors from established UK manufacturers. Fire-rating, compatible components and installation requirements vary by product, so always follow the manufacturer's current certification and fitting instructions.

  • 30 minutesFD30 rated
  • Product-specific certificationavailable where applicable.
  • Fire-rated constructionSpecifications vary by product
  • Standard UK sizesMultiple sizes available
Shop FD30 fire doors
Shaker Pattern 10 FD30 oak fire door Shaker Pattern 10from £145
Salerno glazed oak FD30 fire door Salerno Glazedfrom £229
Suffolk white primed FD30 fire door Suffolk Primedfrom £132
Fire-rated door handle on backplate Fire-rated hardwarefrom £18

New for 2026

Black doors, made bold.

Matt black internal doors that anchor a room. Factory-finished, so there’s no painting, no brush marks and no waiting.

  • Factory matt finish
  • Contemporary flush
  • All standard UK sizes
  • FD30 available
Explore the collection
Matt black internal door fitted in a contemporary open-plan living space
Victorian 4 panel pre-finished oak door fitted in a hallway

Why Oak Doors Direct

Buying doors online, done properly

  • Established UK supply network

    Supplied through established UK door manufacturers and distributors, with Oak Doors Direct remaining your point of contact for order support.

  • 14-day returns

    If the door isn’t right, send it back within 14 days — unfitted and in its original packaging.

  • Delivered in 3–5 working days*

    Doors arrive within 3–5 working days*, and delivery is free on orders over £500.

  • Advice

    Ask about trimming allowances, hinge positions or fire regs before you buy.

No surprises at checkout

Delivery, returns and what it costs

Stated up front, because finding out at checkout is the fastest way to lose your trust.

UK delivery

Doors are heavy and awkward to ship, so delivery is priced separately from the door. Here is exactly what it costs, before you reach checkout.

England & Wales
£35
Orders over £500
FREE
Scottish Highlands
£85
Lead time
3–5 working days*

14-day returns

Changed your mind, or the style isn’t right in the room? Send it back within 14 days, unfitted and in its original packaging.

Return window
14 days
Damaged on arrival
Free replacement
Wrong size ordered
£45 collection

Guarantees

Manufacturer-backed and handled by us, not passed back to a supplier you’ve never spoken to.

Manufacturing defects
10 years
Pre-finished surface
2 years
Fire certification
Supplied in box

News
Prefinished vs Unfinished Oak Doors: Which Is Best?

Prefinished vs Unfinished Oak Doors: Which Is Best?

|My Store Admin
Not sure whether to choose prefinished or unfinished oak doors? Compare the cost, convenience, appearance and finishing work

Before you order

Questions we get asked most

Still not sure?

Talk to someone. No hard sell — we’d rather you ordered the right door once.

+44 7376 063891 Monday–Friday, 9:00am–5:00pm
How do I measure for a new internal door?

Measure the existing door, not the frame — width, height and thickness. Standard UK internal doors are 1981mm (78″) tall and 35mm thick, in widths of 610, 686, 762, 813 and 838mm. If your measurements fall between sizes, order the next size up: most doors can be trimmed by up to 6mm on each edge.

Can I trim a door to fit?

Standard doors allow roughly 6mm off each edge — more than that cuts into the lock block or stiles. Fire doors are stricter: usually 3mm per edge, and trimming beyond the manufacturer’s allowance voids the certification. The permitted allowance is printed on the door’s label.

Which doors legally need to be fire doors?

In most UK homes, any door between a habitable room and a protected escape route — typically hallways and stairwells — plus doors from an integral garage, need to be FD30. Three-storey homes and loft conversions have additional requirements. If in doubt, check with your local Building Control before ordering.

What’s the difference between pre-finished and primed?

Pre-finished doors arrive lacquered and ready to hang — nothing to do but fit them. Primed doors arrive with a base coat and need two topcoats in your chosen colour. Primed costs less but adds a day or two of work per door.

Do you deliver to Scotland and Northern Ireland?

Yes. Mainland Scotland is charged at the standard rate. The Scottish Highlands, islands and Northern Ireland carry a surcharge, calculated automatically at checkout from your postcode — no surprises after you’ve paid.

What if a door arrives damaged?

Photograph it and contact us within 48 hours. We replace damaged doors free of charge and arrange collection of the original — you don’t pay return carriage and you don’t deal with the manufacturer.

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