In reply to Alan M:
I've not been through Heathrow for many years - but when I was travelling from the Northern Wastelands ( Scotland & Cumbria) to and from the Gulf in the 80's and 90's, I used to try and avoid Heathrow like the proverbial plague. Getting to and from the old T1 from T3 or T4 was a proverbial PITA. T5 had not been built so I cant comment on it.
I'd invariably fly via Schipol from either Glasgow or Newcastle which meant I didnt have to lug my bags between terminals.
Once Emirates started flying direct to Manchester I switched to that route - however getting home to West Cumbria took just as long as from Newcastle.
Since moving to Lancashire, I'm now fairly handy for Manchester - which is not that bad compared to some large airports I've used - though it could learn some lessons from the likes of Vancouver and Barcelona!
Liverpool is no handier for me than Manchester - and to be honest is not a patch on Newcastle in terms of facilities.