I've lived/worked between Amsterdam and London for years.
Eurostar is my clear preference if you can get a straight through train without changing in Brussels. Departs St Pancras at 5:11pm. Travel Standard Premier so you get dinner at your seat at 5:15pm. 4h trip, no changes. Arrive at Ams Central Station at 10:20pm. Arrive at home/hotel by 10:40pm. Slower, but extremely comfortable. And you can work productively all the way.
For travelling in the morning, the 7:25am flight from LCY is good. The smaller airport is much quicker to get through than LHR or LGW.
For the return trip from Amsterdam to London, you do lose a lot of time at Schiphol airport. Flying into LCY makes up for it though, especially if you work in Canary Wharf. I'd typically take 20 mins from plane landing to sitting at my desk.
Eurostar is my clear preference if you can get a straight through train without changing in Brussels. Departs St Pancras at 5:11pm. Travel Standard Premier so you get dinner at your seat at 5:15pm. 4h trip, no changes. Arrive at Ams Central Station at 10:20pm. Arrive at home/hotel by 10:40pm. Slower, but extremely comfortable. And you can work productively all the way.
For travelling in the morning, the 7:25am flight from LCY is good. The smaller airport is much quicker to get through than LHR or LGW.
For the return trip from Amsterdam to London, you do lose a lot of time at Schiphol airport. Flying into LCY makes up for it though, especially if you work in Canary Wharf. I'd typically take 20 mins from plane landing to sitting at my desk.