Don't even get me started on baggage (hand and checked) regulations (real and made up) on Emirates. It's always been a challenge ex-KHI where EK literally changes things every two weeks. However, as of three weeks ago, they were enforcing the 20kg checked plus 6kg handbaggage policy for UK flights. Earlier in the year, for US bound pax, they were enforcing 2 X 30 kg if you did not have an onward connection on a US airline, in which case the limit was 2 X 25 kg).