12. Haglöfs Rando
This lightweight jacket from Haglöfs features the latest Gore-tex C-Knit material which is soft, flexible and durable - great for wind and waterproofing.
13. Helly Hanson Express Jacket
This jacket is packed with tech, from the Primaloft insulation, to DWR water repellant, RECCO Advanced rescue system, Helly Tech Performance stretch fabric, and H2Flow system for 'turbocharged' mechanical venting. Don't let that distract you from the attractive traditional Alpine design though.
14. Kjus x Hublot Limited Edition
Perhaps the ultimate T3 jacket - meet the Kjus x Hublot limited edition.
Hublot's usually a brand you'd see popping up in our best watch guide, but they've also spent three years developing a jacket with ski-brand Kjus. Where functionality meets luxury, it's the first piece of clothing to feature real carbon YKK zip puller.
It's got goose down, PrimaLoft and Dermizax EV carbon to keep the cold and water out. Perhaps the best feature is an exclusive 'watch window', so you can still show off your Big Bang.
Only 200 are being made, and each will be numbered. Get your orders in fast!
POA | KJUS
15. Mackintosh Raincoat
The O.G when it comes to raincoats - Scottish brand Mackintosh know what they're doing when it comes to weatherproofing. Made from nylon and featuring a detachable drawstring hood. This is a true classic.
And we got through that without making a pun about Apple, well done us.
£410 | Mackintosh coats
16. Mountain Hardwear Glacier Guide
Designed for professional mountaineers (and people who live in Scotland), the Glacier Guide is a serious technical parka. It features Air Shield technology which is breathable yet windproof, and Q Shield Down, which is infused down fibres with permant water relellant, helping it maintain heat insulation properties even when sodding wet.
$400 | Mountain Hardwear jackets
17. Musto Ventile Arctic Primaloft Parka
The Musto Ventile is a stylish and practical parka with a super-high spec. Ventile fabric was originally designed for fire hoses and later developed into protective clothing for RAF pilots (it then went on to become the material of choice for Sir Edmund Hilary during the first Everest climb).
This modern jacket is insulated with PrimaLoft Gold Down (tech used by U.S Marines and Special Forces), Lycra cuffs, an adjustable storm hood, and coyote fur trim. This offers protection at temperatures below -30 degrees celsius without retaining water or freezing.
There are only 150 Ventile Parka's available to buy (100 men's and 50 women's), each with a limited edition serial number, so you better act fast.
£1,249 | Musto jackets
If you do miss out on the limited edition coat, we'd suggest going with the brand's Evolution Artic Gore-tex Primaloft Park (£695). It's currently my go-to jacket in this chilly weather.
18. The North Face Himalayan
The North Face - brand of choice for BBC news reporters on location, anywhere. We love this parka from the company, featuring HyVent technology, and responsibly sourced down, it looks right at home on the streets as well as more remote locations.
19. Patagonia 3-in-1 Snowshot
As the name suggests, with the Snowshot from Patagonia you're getting three jackets in one (so it's a bargain, really). The system can be worn as a waterproof shell, light insulation, or full waterproofed insulated jacket. Featuring H2No and 60-g Thermogreen this is versatility at its best. The only thing it can't do is transform into a truck, Optimus Prime-style.
20. RAB Batura
The Batura from RAB is another specialist down insulated jacket, so it may be overkill on the Sussex Downs, but you never know when extreme levels of protection are needed. Designed for expedition use in polar conditions, the Batura features narrow box-wall construction and a Pertex Shield. If you're looking for something more extreme go with the Expedition Jacket from RAB, or something a little more casual? Go with the Andes.
21. Snow Peak Down Jacket
Snow Peak is a brand started by Yukio Yamai, an accomplished mountaineer, in 1958 when he became dissatisfied with available products. The company now strives to create harmony between people and nature, with products that you can pass down to the next generation, like you would a wristwatch. Which we think is a pretty nice sentiment.
This shearling-trimmed wax cotton down jacket is both water and wind-resistant. It's packed full of quilted lining and down, offering exceptional warmth.
£690 | Snow Peak jackets
22. UNIQLO Mountain Parka
Another budget friendly option, this parka from UNIQLO is attractive and practical. It features a water-repellent coating (which doesn't have a fancy name), and comes in a number of colour options.
£60 | UNIQLO
23. Volcom Starget Parker
Volcom say this is the 'next generation parka'. The heavyweight hooded coat provides enhanced warmth and weather protection - treated with 5000WR. It's lined with plush sherpa and heavyweight poly fil, and looks great as well.
24. The Workers Club Quilted Bomber Jacket
We absolutely love this quilted jacket from The Workers Club. It's be designed exclusively for Mr Porter, and can cleverly adapt to the changing weather. Crafted from a lightweight shell, the jacket can be reversed, for either an army green or navy coloured exterior.