Ok. Thanks for your help so far... is the underground like normal train stations so there will be waiting areas. And how can I get from Charing Cross (basically where the club is to) to London Victoria? Will there be buses running or is that in walking distance?
Thanks so much guys!
There are night buses, which accept Oyster Pay-As-You-Go (the way I see it, really your only option here, given that a travelcard issued on one day will run out at 0430 on the next day.)
I would suggest taking the N11 night bus towards Ealing. Note that during the night, buses are far less frequent than they are during the day: whereas in daytime, central London buses usually come a minimum of every 15 minutes, night buses tend to be timetabled for one or two buses per hour.
Here is a timetable for the N11.
The Tube is not like mainline railways. Very few stations (if any - someone with better knowledge of London can probably correct me!) have "waiting areas" unless you count the platforms themselves, which are closed overnight whilst engineering work is taking place. Mainline stations usually close once the last train has left, but
Victoria is open 24/7 according to this page, so you could just hole up on a bench with a book/Nintendo DS/etc.
This is because in normal service, Tube trains are "metro" services where trains come every few minutes, and, in most cases, call at all stations en-route to their destination. It's a "turn-up-and-go" system, and so most people just stand while waiting a couple of minutes for their train.
Underground stations, therefore, don't have waiting areas and aren't really like National Rail stations. It's easy to find your way around on the Tube, though: as long as you follow the signs and check the map, you shouldn't have any trouble at all.
Again, my suggestion is that you should get a pay-as-you-go Oyster card to get around London, and just buy a simple off-peak return to London Terminals (just ask the ticket clerk at Guildford for "a return to London, coming back tomorrow.")
You can buy an Oyster card from most newsagents in London, and there is an Oyster vending machine that will spit out a card loaded with £2 if you put in £5 in coins at Waterloo tube (or, rather, there was last time I was there - YMMV.) The system is extremely simple to use on the Tube: you touch it against the yellow reader on the gates (or on a pedestal or mounted on a wall, if there are no gates) on entering and exiting the system.
On the bus, it's even simpler: you just touch it against the reader upon boarding, and you're done. Remember that London buses and trams have a flat fare of £1.30 per journey.
Another good thing about Oyster PAYG is that it automatically works out the cheapest fare - so the daily cost will never exceed that of a one-day Travelcard.
Only an idiot would pay by cash on buses, trams and the Tube in London, given that the bus fare becomes £2.20 and the Tube single fare in excess of £4 for a journey in Zone 1.