The ICAEW has fined members for the first time for failing to meet the requirements for continuing professional development.
Source Accountancy Age.
I recall, many many years ago, forgetting to pay my annual membership fee (mea culpa!) and (despite apologising profusely for my error) being charged approximately £400 by the ICAEW for the privilege of being "readmitted".
Suffice to say my membership fee is now paid by direct debit!