most of the answers provided in this thread relax some of the assumptions in the op ideal scenario - most are not from London (and exclude the price of positioning and possibly accommodation at departure airport one or both ways), some largely exceed the budget suggested etc. This one offers the right city pairs, comfort levels that are much higher than what the op expected at the price point and which wouldn’t be negated by additional flights and longer routings and is within £200 of budget. Op can of course decide that they ultimately prefer to get less comfort and less convenience at a higher price to fly ow, but in my view, that’s by far the single best suggestion op should pick if it works for their dates.