Additional Top-up Amount
Now that the court fee has changed, your credit may no longer be an exact multiple of the court fee.
If this is the case, the web site will detect it and provide an additional top-up amount somewhere between £10.00 and £12.50. If you top-up by this amount your credit will then become a multiple of the court fee; and you won't see this additional top-up option again.
Also the top-up amounts for casual players are now restricted to multiples of the casual members court fee.