She has also taken the wise step of setting up a direct debit to cover the minimum payment amount each month.

The actual payment amount per family will depend on the degree to which a family participates in the activities.

Cashier enters payment amount as normal and verifies customer's identity by comparing their face to the image on their system.

It then allows you to extract automatically the supplier, date, payment amount and even the self-assessment tax category.

On the other hand, tips or other gratuities given by a customer, for example in a restaurant, would not form part of the payment amount.