My series 2 coffee cup leaks I wrote to them and they responded by sending a new lid. Before they sent a new lid I was asked for lots of different photos - which I sentIt still leaks After the new lid I sent second email It leaks a lot when shaken. Less when moved or on its side but is wet with any movement. And more videos This is the reply I got “Given that our coffee cups are not 100% leakproof, we do not consider this a product fault. I do apologise sincerely if this was not clear upon purchasing the item, but we do not state that the cup is leakproof anywhere on our website.” It is remarkable that anyone would want to buy a coffee cup that leaks. My opinion is that if you can keep it fully upright it is fine - but if it is in a handbag or sports bag - your bag could get wet. I was amazed at the response- and I did reply earlier today but having had several exchanges - this was the final straw