My other thermos which is the ‘teapot’ shaped one with a spout leaks & amazon couldnt send a replacement, so I ended up with this new one:
http://www.thermosonline.co.uk/store/Thermos-ThermoCafe-Stainless-Steel-Flask-1-0L/sp_296
its a travel thermos, 1L model (im tempted to get a .5L for short jouneys now) which was perfect at the weekend for a picnic.
the lid fits tightly, water still hot 7 hours later after I slept last night, seems solid in all these aspects.
downside is its a bit bad for pouring, as you have to unscrew the lid more to get more pour, as the pouring gap is built into the threads.. but im sure thats something can master – I didnt spoil any dan cong in hyde park even though I panicked a bit trying to not over steep.
basically a pretty good buy, got mine for about £12.