Use comparison sites for Utilities and Insurance
Use Cashback sites like Quidco, or Topcashback
Use Shopping Sites: Shopitize, CheckoutSmart
Use loyalty cards, but don’t be too loyal, it may cheaper elsewhere.
Use cash, carrying your cards can lead to impulse spending. Or use a separate bank account for spending, our DD’s and SO ‘s come out of another account, that way we always know what we have to spend.
Check your bank statement for any DD’s SO’s that are no longer needed.
Drop a brand at your supermarket or use a low cost supermarket we use Aldi and Iceland (try their salmon wellington)