Prochef Square Cake Tin Premium Quality with Teflon's Silicone Coating, Black, 24cm : Amazon.co.uk: Home & Kitchen
4 to 10 Inch Straight-Sided Square Shape Cake Pans Aluminium Alloy with Fixed or Loose Bottom Chiffon Mold Mousse Tin DIY Bakeware (4 Inch Loose) : Amazon.co.uk: Home & Kitchen
Invicta 14 inch / 355mm SQUARE CAKE TIN baking pan - from only £19.34
Square Cake Tins & Cake Pans | Cake Stuff
12 Inch Square Standard Depth Cake Tin | Sugar & Ice