What is your purpose, you likely upper class tone policing British ninny?
Do you think you are helping people by helping create the illusion that a case that has horrible user reviews, is heavy, expensive is good? See:
https://www.amazon.com/International-Brompton-Bike-Case-Foldon/dp/B00A3VLYLK/ref=sr_1_2?keywords=B%26W%2Bbrompton&qid=1638075322&sr=8-2&th=1
Even the low IQ ninny who posted this thread admits he has to go to Herculean efforts to get it to fit modest amounts of bike accessories. Something is seriously wrong with the low quality luserbase of this sub...
What’s your budget?
Cheap = Smaller to save on bike baggage fees. lots of work to dismantle your bike to get it to fit. Tho this is less of any issue with more airlines now and you’re good to go as long as the bag is less than 50lbs. These tend to be heavier because they’re cheap and safer for your bike. Lots of trade offs to consider. $300 range.
Consider… B&W International Bike Case https://www.amazon.com/dp/B01MRKBJ2R/
Pricey = Larger for less disassembly, because you don’t care about baggage fees, tho these tend to be lighter also. Fancy rolling wheels and structure to protect your bike. If you think you’ll bike travel frequently, there may be an opportunity to recoup your costs. 500+ range. MTB and Tri bikes fit here.
This is the one I have and I only have to remove the wheels. It’s traveled all over the world for tri’s. To pack and unpack is super easy.
Sci Con AEROCOMFORT 3.0 TSA Triathlon Bike Travel Bag https://www.amazon.com/dp/B072J8MKCX
1) Vincita has a newer model soft luggage case called the Sightseer 3.0 that can even accommodate a Brompton with an extended seatpost. It doesn't have any bicycle printed on the exterior by default(that was always a dumb move since many airlines charge or could charge and extra bike fee).
2) The B&W folding cases look good but aren't. At Bfold in NYC I was talking to the owner after asking him if he stocked Vincita bags and he said the B&W folding cases are made poorly and his customers complain about them. Here is a reviewer on Amazon complaining that it only lasts for like 1-2 trips:
https://www.amazon.com/International-Bike-Foliding-Box/dp/B07B5LVDLF
There are other Amazon listings of that folding B&W case where other people also complain they are essentially disposable investments that ruin after a trip.
so i've got the thule canyon on my TDI jetta sportwagen. I've had no problems with it and it has survived many camping trips, furniture moves, and plenty of other uses. link to basket: https://www.amazon.com/Thule-Canyon-XT-Cargo-Basket/dp/B01N54NYCC
BTW any interest in a pair of slighntly used cross bars?