Are figures available on the amount of compensation awarded in unfair dismissal cases?

Yes, HM Courts and Tribunals Service publishes maximum, median and average awards in its statistics reports. In the year 2017/18 the average compensation awarded in unfair dismissal cases was £15,007 while the median award was £8,015. Compensation of £50,000 or more was awarded in 34 cases, with the maximum award being £415,227.