Hi
We can't see that there would be any gain for your client paying what is owed into your personal account.
If anyone had anything to gain it would be you as the director of the company.
It depends on your bank, some banks terms won't allow the use of personal accounts to trade or do business.
Realistically, the money should be paid direct into your Limited company business account.
If your bank accepts the payment into your personal account, you could transfer the monies direct into your business account, providing you keep all records and account for everything correctly, such as the date of when the transactions/transfers took place.
You may wish to check with your bank first.
Please refer to guidance at: Invoicing and taking payment from customers: Payment - obligations
Thank you