There are a wide variety of steps; some of which fold up whereas others don’t, there are steps with handles on and some without, some steps are more suitable for one than others.
Keywords (to search): step, step stool, chair, footstool, stepladder.
IKEA
Forsiktig; non-folding
Bolmen; non-folding
Trogen; non-folding
ADDiS
Step Stool; 240mm height
*Can also be found in black at Wilko*
AMAZON
Small Folding Step Stool; 220mm height
Large Folding Step Stool; 370mm height
ARGOS
Chrome Step Stool
COMPLETE CARE SHOP*
Aluminium Bath Step; 200 – 260mm height
Metal Step Stool; 240mm height
Bath Step Stool with Handrail; 260mm
Bath Step; 100mm