In 1999, Chris and Gill converted a crumbling mill into a high-tech home unlike anything else. A quarter of a century later, does their radical design still feel ahead of its time? Grand Designs, 9pm on Channel 4.

A 19th-century mill. A radical high-tech makeover. And a £6,000 shower balanced on the second floor 😳 25 years on, Kevin McCloud returns to see if Chris and Gill’s bold vision has stood the test of time. #GrandDesigns

We’re on the longlist. Can we get the win? 👀 Vote for Grand Designs in the TV Choice Awards before midnight Tuesday 20th October via the link in the comments below.

One of the longest projects in Grand Designs history. Don’t miss tonight’s new episode, 9pm on Channel 4. #GrandDesigns

An old prefab. A scrap of land. A dream home. And ten years to make it happen. New Grand Designs, tonight at 9pm on Channel 4. #GrandDesigns

A modern, unique house on an awkward, tightly constrained site. Don't miss tonight's NEW episode on Channel 4 at 9pm 📺 #GrandDesigns

TONIGHT: Seb’s designing, project managing and crafting an ambitious house all by himself, in his grandparents’ back garden. No pressure then! NEW Grand Designs continues tonight at 9pm on Channel 4. #GrandDesigns

A house unlike anything you’ve ever seen on Grand Designs before. Grab your bingo card and settle in for NEW #GrandDesigns, tonight at 9pm on Channel 4 📺

Two eccentric, conjoined houses with arches, marshmallow render, and turquoise windows 👀 You won't want to miss NEW #GrandDesigns, tonight at 9pm on Channel 4 📺

When you spend months planning the perfect social strategy… and then this happens 😂 We’ve had a giggle reading all your replies. Keep them coming! 👀 #GrandDesigns

£820,000. A Cornish beach. And one very ambitious house. 🌊🏡 Tonight, Bryony and Matt set out to create a modern, high-performance home that meets the highest environmental standards. Can their dream beach house deliver on every front? 📺 Tonight, 9pm on Channel 4

Bryony and Matt are spending £820,000 on a modern, high-performance home on the Cornish coast - designed to meet the highest environmental standards. Will they pull it off? 📺 NEW Grand Designs | Tonight, 9pm | Channel 4

New builds. Big ideas. Extraordinary homes 🏠 This Autumn, #GrandDesigns is back with four brand-new builds and two long-awaited revisits. Plus, Grand Designs: House of the Year returns, celebrating the very best of British architecture and design. The countdown is on 👀

In 2024, we celebrated the 25th anniversary of Grand Designs by revisiting the show's first ever project 🏡 There's another chance to see it tonight at 9pm on Channel 4. #GrandDesigns

Sun salutations and building regulations 🧘‍♂️ #InternationalDayOfYoga #GrandDesigns

Great architecture and great art have a lot in common. But would you ever want to live inside a sculpture? #GrandDesigns

REPEAT: Pep and Malene build a modern take on a Viking Hall, inspired by the couple’s love of all things Scandinavian. If you missed this truly special episode the first time round, catch it again on Channel 4 at 9pm. #GrandDesigns

Meet the new bRoom op! 🧹 #GrandDesigns