Incidentally, there is at least one old law that lives on in our practices though it has been abolished.
The practice in England has long been to say "And have one for yourself" to the barman or barmaid in a pub. A waiter in a restaurant might be given a tip in cash, but bar staff in a pub never were. This is because old licensing law was determined to ensure that only the licensee was responsible for everything concerned with the management of the pub and that he was never a mere placeman or stooge for others who might not, because of bad character or other defects, be fit to hold a licence. Accordingly it was illegal for anyone other than the licensee to pay any part of the staff's wages. Therefore no customer could pay cash as a payment or reward for services. But giving the barman a drink,to be taken in kind,was not seen as payment, since it was not like legal tender and was anyway both a small token and limited in its extent by the capacity of the recipient. That this ever continued, with the barman taking the cash equivalent from the till rather than the drink, showed that old habits died hard