Steffi
You do not need to contact the DWP until you can reliably walk more than 20m on the majority of days. Reliably means
• Safely – in a fashion that is unlikely to cause harm to themselves or to another person.
• To a necessary and appropriate standard – given the nature of the activity.
• Repeatedly – as often as is reasonably required.
• In a timely manner – in a reasonable time period.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems