Daemonscape sells this VTOL:
http://daemonscape.co.uk/contents/en-uk/p98.html
Which is perfectly fine, especially for a tenner. It's a nice chunk of resin when you get it, about the size of a Rhino.
You'll have to kitbash some landing gear, as it doesn't come with any.
Alternatively, this monster is a foot long:
http://daemonscape.co.uk/contents/en-uk/p87.html
If you prefer to stick with
GW, a Valkyrie might do (very Aliens), or something like a Tau Devilfish is a bit sleeker and more high-tech in appearance. Forgeworld sells the Arvus lighter, but I imagine you're looking for something cheaper.
Several 3D printing shops sell printed 28mm spaceships, but they're also expensive. Antenociti's Workshop has hinted they may bring back some of their beautiful VTOLs and dropships as physical models rather than STL-only, but you won't be getting change out of £100.
Otherwise, it's toy kitbash time. Various Avengers Quinjet toys have been used over the years, or big chunky Star Wars spaceships for the 4" figures. The 2-
ft long nerf-firing U-Wing is perfectly sized for 28mm figures. Toys are often
OOP and wildly cheap on eBay - I got a Quinjet for £10 a couple of years back, and discarded the Captain America on motorbike that came with it.
This Quinjet is chunky:
https://www.ebay.co.uk/itm/115314313230
This version is the one I bought. It's about 25cm long and 40cm wide:
https://www.ebay.co.uk/itm/165430564058
This U-wing is 2ft long:
https://www.ebay.co.uk/itm/154916636974
This Dakka thread has many, many suggestions:
https://www.dakkadakka.com/dakkaforum/posts/list/689888.page
One caveat is how much of the gaming table you want to take up with one. A 2ft model is great, but that's a third of your space taken by a single model. I'd suggest staying under roughly 1ft long for a model.