Loz, the quickest way I lose weight is by switching to skim or fat free milk and as Cofty said, to have smaller meals during the day and switch to a low GL diet. Eat fruits such as plums, berries, pears and watermelon as these have a low Glycemic Index.
You can supplement with chromium and 5HTP as these 2 do help with weight loss. 5-HTP is especially good if you have sugar cravings, although if you are on a serotonin-reuptake drug such as prozac, you shouldn't take 5-HTP.
I also find that if I make sure that 1/4 of each meal is protein, 1/4 carbohydrate: (starchy veggies or foods)and half of each meal non-starchy veggies, I lose very quickly. Both chromium and 5-HTP are natural products.