Gerry, I am horrified that you have to drink herbal tea. Surely you can lose weight while still drinking proper tea? Although if you have a strong association between tea and biscuits, perhaps not.
As for how I did it... Got an exercise bike, racked up a minimum of 10km on it every day (often more), but found exercise had far less effect on weight loss than eating less. Didn't calorie count initially, just tried to eat less and avoid junk food. And booze. God, the calories in booze. Plus I tended to get the sort of hangover where you need to eat half your body weight in crisps and bacon to feel human the next day, which as you can imagine didn't help matters much. Tried to limit carbs of the bread/pasta/rice variety - bread only once a day and only the one slice, always decent wholemeal stuff, skip the mashed potato at tea time, have pasta sauce on a bed of vegetables, that sort of thing. In terms of calorie reduction it's awesome, because vegetables have bugger all calories in. My dad got me a blender so I had a smoothie for lunch every day, banana and whatever else looked interesting in the greengrocer's. Dealt with hunger by distracting myself - easier then when I was unemployed and had no baby to look after and could just play Warcraft all day.
The hard part was the mental part though, as I expect you can imagine. I've always been fat and I've always had terrible eating habits and I've always enjoyed the act of eating too much. It wasn't just a case of "If I stick with this diet for a year I'll be skinny and then I can go back to eating properly, hurrah!" It was more a case of having to revise my way of thinking about food and figure out a way of eating that was sustainable. If you weren't overweight pre-pregnancy and it's just baby weight you've got to shift you'll have the advantage over me there - you can revert to your prepregnancy eating patterns, maybe throw in some exercise, and then just carry on with life as the weight falls off.
Incidentally, your meal plan yesterday sounds lovely (except the spinach). And Fartypants is awake (I think? Or moaning in her sleep? It's far too early!) so I better dash.