Different business activities of an ltd - do different bank accounts required?

apple

one of my client runs his ltd. His partner is a masseur, she is employed by the ltd, so massage services is one of the activities.
the next activitie is consultancy, coaching on how to build your own network (accourding to my client)
without letting me know he started his online book selling business as well.
for these activities the company has only one bankaccount so all incomes and expenses go throught this one bank a/c.
is it required by law to separate the different business activities? for me it is such a headache to follow the transactions. i tried to persuade my client to have at least 3 different bank accounts but he is not willing to do it.
thanks in advance

apple

thanks mrme89. i guess i submit a merged,abbreviated account to companies house and hmrc

burg

Yes joint accounts but you need to be able to account for the profits from each trade seperately for tax purposes.

apple

burg said:

Yes joint accounts but you need to be able to account for the profits from each trade seperately for tax purposes.

thanks