Sorry completely misread your question.
Loss to the CAA in fees is estimated at £40,000 which is an average of
£1000 per aerodrome x 40*
* where they anticipate 40 aerodromes to withdraw their licence.
A handy PDF file detailing possible impacts is on the CAA website on the above link.
CAA Aerodrome Standards consider that there are up to 40
aerodromes that may consider becoming unlicensed. Aerodrome
licensing charges vary, but if figure of £1,000 p.a. is assumed,
the loss of revenue to the CAA may be in the region of: £40000
This may also be considered a benefit to the industry, as a
reduction in CAA charges.