I keep three kinds of records as follows.
Information and consent forms This is a paper record that provides me with adequate, relevant personal data and is limited to what is necessary. They also give various consent so that I can to look after your pets. If this information changes please let me know so that they remain accurate. Please ask if you would like a copy.
Accounts records This is a card record with personal details identifying the account to which I add dates and payments. I keep these records for at least 5 years after the 31st January for HM Revenue and Customs. Please ask if you would like to have a look at your account record.
Electronic contact details I compile these details from the information and consent forms. I use them to keep in touch with current clients wherever I maybe. I delete contact details when purpose has been fulfilled, for example if you move away. My electronic devises are password/PIN protected with network security.