The Department of Work and Pensions could be making surprise payments of £12,000 to thousands of people after a court ruling.

Around £18million has already been paid out to people who lost out because of a legal error relating to the points it awarded for Personal Independence Payment.

This would have resulted in some claimants getting lower PIP payments, while others were refused any PIP at all because their points weren't high enough to qualify.

PIP is a benefit delivered by the Department for Work and Pensions (DWP) and helps cover the extra costs you may face if you need help with daily tasks or moving around outside your home.

One man received a huge award of backpay when the DWP finally agreed to review his case.

The claimant, who has a severe mental health condition, felt he should be eligible for a back payment of PIP.

After a long battle including two requests to look again at his case and an attempt to take the DWP to a tribunal, officials agreed to carry out a 'mandatory reconsideration' and awarded him £12,000 in backpay.

Now, the social security advice site Benefits and Work has identified a list of conditions that DWP documents say are most likely to be eligible for backpay.

Conditions most likely to lead to claimants being eligible for PIP backpay

The key conditions are:

  1. Agoraphobia
  2. Alcohol misuse
  3. Anxiety and depressive disorders (mixed)
  4. Anxiety disorders
  5. Autism
  6. Bipolar affective disorder (Hypomania / Mania)
  7. Cognitive disorders
  8. Dementia
  9. Depressive disorder
  10. Drug misuse
  11. Learning disability
  12. Mood disorders
  13. Obsessive compulsive disorder (OCD
  14. Panic disorder
  15. Personality disorder
  16. Phobias
  17. Post-traumatic stress disorder (PTSD)
  18. Psychotic disorders
  19. Schizoaffective disorder
  20. Schizophrenia
  21. Stress reaction disorders.