Started off at £30, then is now half price @ £15 but by using code B16WT08 it takes another 10% off (code works on workshop & tools). Great reviews.
They also have; a 12.5" one for £4.50 with code, 16" @ £6.30 & 20" for £9.

Well worth a browse if you're after tools or workshop items. Seems to work on tool kits too.

Stanley 24" Toolbox

The Stanley 24" Toolbox is made from polypropylene with heavy-duty metal latches, ideal for tool storage & transport for business or home use. It has two built-in lid organisers for the easy access of frequently used small parts without having to open the lid. It also has a removable tote tray inside, ideal to store smaller items and a built-in padlock eye, suitable for a small lock, to keep the contents secure. The soft, wide rubber coated handle allows for an easy and comfortable grip.

Stanley 24" Toolbox Extra Info

Tote tray inside to store smaller items
Nickel metal-plated latches
Two lid organizers for small parts storage
Size: 290mm (width) x 610mm (length) x 270mm (height)