In some circumstances, you may qualify for a concessionary licence. For example, if you are over 74, you can apply for a Short Term Licence, which will cover you until the month you turn 75, at this point you become entitled to a free Over 75 Licence. If you are blind, you can apply for a Blind Concessionary Licence at 50% of the full licence fee. And if you live in residential care, you may qualify for a licence at £5 per year.
All becomes clear!