@Copperas
I have either a creamy coffee or 2 eggs/cream/half a leek in a frittata for breakfast, sometimes with a slice of bacon.
This sounds OK, but I'd try going without the cream if you can - just try it for a couple of days and see what happens
Lunch is at work, from the canteen - I have tuna mayonnaise with salad - sometimes grilled chicken with salad.
If it's from a canteen, chances are this will be low in fat. The mayo will almost certainly be low fat mayo, and if they're grilling chicken, then that will also be low fat. If they're providing a salad dressing, chances are it will be pre-prepared/manufactured, and most likely will contain sugar. If this is the case, why not either ask them if they can just provide you with oil and vinegar, to make your own, or make a vinaigrette dressing and take it into to work
Dinner - I've been eating a combination of meat (pork shoulder, or 898% pork sausages, or belly pork, or chicken thighs) with courgette or broccoli or cauliflower cooked in the same pan, and cream added at the end to make a bit of sauce. Or I have a mixed salad with mayonnaise instead of cooked vegetables.
Again, try knocking the cream on the head for a few days. Add a big knob of butter instead. And add an oily dressing to the salad as well as mayo
If I snack, it tends to be cheese - a couple of ounces? Or celery with something like salmon pate.
See what happens if you avoid the cheese. Pate is good, also olives, if you like those?
I have had the odd bit of fruit, but mostly berries.
This is likely to be a source of carbs, especially when it's not been berries! I'd definitely avoid the fruit for now if you can, at least until you see the scales starting to move again
Also perhaps 3 cups of tea a day with a little milk. I'm trying to get to 3 litres pf water a day but do find this hard
All that milk will also be adding carbs to the diet - if you're finding the water difficult, I'd really suggest that every time you think about having a cup of tea, you substitute it with water - then you've achieved your water target and you've avoided the carbs from the milk in your tea!
Sorry for the drip feed, but I also have total yogurt every other day
More dairy - if you look at what you've been eating - cream, milk, cheese and yoghurt, this is quite a lot and you could find that this is impeding weight loss. Try a few days without it and see what happens