Saw this tool box instore: West Thurrock (lakeside). They are reduced from £34.98 to £10.00.
The B&Q red clearance sticker has "1-95-620 STANLEY GALVANISED METAL PLASTIC TOOLBOX 26"/67CM" on it.
EAN # 3253561956201.
They had about 30/40 of them left out on the shop floor, but they were going pretty fast. (I had 3 of them).
The B&Q website only shows the 23" version