[MrFlippant]

4 Draw Organiser and Tool Box - perfect for storing small items like washers, screws, nails, bolts etc. 4 Pull out drawers with fold up front to keep them in place,strong carry handle. : Amazon.co.uk: DIY & Tools

Leo , this is the nearest to the requested dimensions available on Amazon UK

Utility DIY Storage Tool Box Carry Case 4 Drawers & Organiser Dividers : Amazon.co.uk: DIY & Tools

i purchased this one ages ago , works ok , but one of the clasps is not very good 
good cheep options , but nothing is as good as the original Poly Butler cases imo 
i printed an extra bottom shelf and slotted inserts to keep the tyres raised in the drawers for mine which work great (pics to follow) 
very hard to find these days , but i think versions are still available in the EU 
hope this helps Leo
just need to retire to find the time to use properly   

PowerHobby 1/32 Slot Car Pit Box Case for Scalextric Carrera Slot.it SCX Pitbox | PowerHobby

maybe a bit pricey , but looks to be well thought out , so could be great value 

Kev

Cheers Kev, I think I saw the "Tool Lab" unit earlier but I like the red and black one and it looks identical to the the Stalwart version.
Thanks for very helpful reply.

Leo

PS Edit:
Have ordered a red/black one from one of B&Qs partners for 15 pounds inc shipping  :-)
Will report back with a link once I have received the unit.

If the dimensions shown in the images for those Stalwart-style tool boxes are accurate, I'm afraid those will be on the small size in comparison. They might still work well for shorter 1/32 cars, and only three cars wide, but I fear that longer cars, such as modern F1, or LMP/Hypercars, will not fit inside unless one or two per shelf on the length rather than width of the shelf.

I'm happy to adjust my shelf designs if provided with the width and depth available.