Do you take your own lunch to work or do you buy in or go out to get it ? If so try making your own sandwiches, if you can do it, you do save money each week.
Also I'd get rid of your car, you dont need a 5 series BMW for getting around town do you, downsize it.
How far do you live from work ? Can you walk to work or maybe cycle to work instead ?
Buy supermarket own brand stuff rather than brand label foods.
Sell a kidney