Thanks for your personal finance editor’s warning about increases in electricity and gas prices (Keep switching to get the best energy deal, Your money, February 19). Readers should also be aware they might be consigned to automatic renewal at the end of their gas/electricity year without knowing this. People must tell their supplier at the end of the payment year that they don't want the automatic renewal.

You must give yourself time to shop around for the best price. I mark my calender every year on the date when standing orders are due to finish.

K Allan

Glasgow