Weight / Fat loss

I think you may want to shift the meal balance and what you're eating each meal.

I'd ditch the Muesli and orange juice. Swapping it in for overnight oats or porridge with some nice fruit and nuts in.

Lunch- ditch the sandwich and the cheese for a nice bit of leftovers from the night before- making sure its got Carb/protein/salad/veg in good balance quantities.

Snacking- Cake and Crisps should be out, make your own banana loaf (without sugar-our go to is Banana/peanut butter/ oats mixed up and baked into a loaf- its a winner), or some homemade date/protein bombs (you can make some really amazing things here).
Dinner- More protein, less carbs. (this may as well be the motto for the whole day),

As a husband of a vegetarian- we tend to use noodle substitutes (black bean or Edamame), pasta subs (red lentil or chickpea) (both available online pretty simply) when we want pasta- mixed with homemade pesto (usually rocket) and that works well.

Or Batch make rice for the week, and then tofu meals/ egg meals when necessary.
I've got loads of recipes I've fudged together- all dead simple- usually with the aim of under 30 mins from set up to all pans cleaned. And the fact that we double up- ie always make enough for lunch the next day- means that lunch is pretty healthy but filling too.

As always- its about energy in< energy out. With one day a week as treat day. Plus you'll find that your body's metabolism will just assume that the mileage/ day is the normal- so its best to mess with it- sprints on the commute, bodyweight exercises when you get home- ie press ups/ sit ups/ chin ups. (in fact if you do the exercises- you may find you can stave the hunger off till its dinner time).