Thanks to all. I have a large suitcase (been here a month!) and heavy backpack, so more concerned with ease and convenience. Lizzy or even HEX (expensive but okay if I am running late!) are great. Definitely don't want to change trains or be in a car with crowds. I'm thinking maybe stay somewhere central and taxi to Paddington and just take Lizzy. I am tempted to lounge crawl based on all the great reviews. I will do whatever I can in the time I have. Lounges are good; sleep is better! Of course, there is an 8 hour flight ahead to do that too...

Thanks for all this. Reassuring to know. Will aim to get there at 11 and monitor all the updates prior.