Hey @Jiminny don't be so impatient!
I'm guessing that you're impatient generally about your weight loss, given that you've also tried a VLCD?
First, you need to slow down. You didn't put the weight on over night, so it will take time to lose.
I didn't reply immediately because I'm working, so you'll have to forgive me for that.
Second, the medications you're on may well impede weight loss. I'm afraid I don't know the specifics, not being a medic, but it's highly likely. Another reason you will have to be patient!
And third, apart from the artificial sweeteners, you do seem to be eating a lot of cheese and dairy - so I'd give these a swerve for a while and see what happens. Drop the milk in your tea/coffee too.
How much fat (apart from cheese) are you eating? Are you frying in butter/using butter on your veg? Are you having oily dressings on your salad?
You also haven't answered me about the water - how much water are you drinking?