This is my first post on the forums here but budgeting is an area close to my heart.
My top-5 tips:
1. Ever more important now to shop around for the cheapest energy supplier / insurance / mobile phone contract.
2. Buy bigger packs of items where the unit price is often cheaper (e.g. washing tablets) and look out for 2-for-1 offers etc.
3. Switch to LED lights, turn off electrical items on standby.
4. Don't throw out food just because the Best Before date has been reached - there is often a window of safety with BB dates.
5. Be wary of auto-renewals on subscriptions - check when annual subscriptions end and make sure they are cancelled in time.
Hope that is of some help.