Yes, meal planner a must - sit down on a sunday and plan taking into account how busy you are on that day - depends on whether you work full time too.
I work mine out by dividing beef, lamb, pork, chicken, fish, vege then spuds, noodles, rice, pasta, coucous etc and mix and match to suit. Slow cooking is the cheaper ie mince, shoulders, stewing, chicken thighs, value packs fish. Use website recipe like BBC Good food etc. Weekly is more practical as peshisable items.
Buy bread in bulk (make yr own too!) The less you go shopping the less you spend. You can also freeze milk.
Impulse buys are only good if you can freeze them. I'm no longer taken in by the BOGOFs If I dont need it then I dont buy. ALways for with list.
Eat one, freeze one always works - batch cooking is brill.
I dont buy fancy magazines, no longer different cleaning products - one for all.
Certain isles I dont shop down I no longer buy crisps for instance. Dont buy books anymore - use library or net for stuff.
I never have or will buy gifts for the children/family unless its special occassion. Friends childrens birthdays I buy clothing and mix with art products from Wilkinsons.
Most of my childrens clothes are secondhand and this saves a fortune.
We are not a family who has much family time either and cant beleive the cost of eating out/bowling etc so thats just saved for special occassions - we dont eat takeaways (I find them rubbish rather spend on better ingredients. Once again its all about planning - I am making a steak and ale pie for sat night.
The odd stuff in Aldi is good but you have to read some of the posts on here first as some is awful - washing powder is ace.
Try and enjoy time away from the shops, get out more - spend weekends walking and taking a picnic. Tips to the seaside are brill in the winter sun too.
Endless...