If you are aged under 55 and retired on the grounds of ill health, or your deferred pension was brought into payment because you are permanently unable to undertake any regular full-time employment, you will receive an increase to your pension in April as described here [1].

However, if your deferred pension was brought into payment early because of ill health, but you are not permanently unable to undertake any regular full-time employment, your pension will not be increased until you reach age 55.