Traveling the UK by train?

I want to travel the uk by train, Can you please tell me the cheapest way to travel the following routes:

Brighton-London / London-Edinburgh (WCML) / Edinburgh-London (ECML) / London to Paris.

Please note: It has to be by train! and in this order!

In addition to this how much will it cost?
Obviously London to Paris is by Eurostar

You have to wait for it to stop snowing first

That's a rail difficult question...

Go to http://www.thetrainline.com
There you'll find train times and all the ticketing options - and they'll sell you your tickets. I'm not sure if they do Eurostar but you'll find them at http://www.eurostar.com

There was something on the News last night about train travel and the costs involved, according to their survey it is much cheaper to buy tickets from one place to another say from York to Peterbrough, then Peterbrough to London rather than straight from York to London...

So I guess either put-a-side a few hours and get your excel skills polished and searc the web, or go and spend a good half an hour talking with someone in the ticket office at a station.

Failing all of the above, just make sure you book your tickets on specific trains and well in advance, of course if you then miss a train you should have been on you need to buy another ticket.....

I'm doing part of your journey next week (Thee Bridges - London/London - Durham) . It was much cheaper to buy 2 single tickets (one each way £39 each). It is impossible, however, to give you exact pricing as it depends on how far ahead you propose to book your tickets. The earlier you book, the greater your chance of getting a good deal.

Brighton to London Victoria is a short relatively inexpensive trip so the simplest way is to buy your ticket from the ticket office at the time of travel. Southern Trains run from Brighton to London Victoria every 30 minutes and the journey takes 52 minutes (slightly longer on Sundays). First Capital Connect trains run from Brighton to London Bridge/Blackfriars/St Pancras - St Pancras is next to Kings Cross for trains to Edinburgh and also the Eurostar terminal. They run every 15 minutes and take 60 minutes to London Bridge and 75 minutes to St Pancras. If you are travelling on to Edinburgh on the same day a through ticket is available from Brighton via London and as for all long distance journeys, the further you book ahead, the cheaper it will be.
Go to the trainline site above or nationalexpresseastcoast.com
For Eurostar again book as far ahead as possible; due to the popularity of this service the quota of the cheapest tickets (£59-69 return to Paris), is fairly small. www.eurostar.com
If you decide to make a few additional long journeys around Britain, I would suggest a National Rail Rover which costs £375 for 7 days and can be bought for instant use at most station ticket offices. It is not valiud on Eurostar, the London Underground or Heathrow Express, but unlike advance purchase tickets and other reduced fare tickets, is valid on all trains without time restriction; as most train services here are very frequent you are able to be more spontaneous in your journeys, hopping off trains at a whim or altering your routes or destinations.
You might also take a look at www.seat61.com

If you are not a UK resident try Eurodomino tickets .Used them abroad a few years back but being a British passport holder could not use one here. I remember that a Eurodomino for UK was a lot cheaper than the Railrover .Won`t cover Eurostar but they often have bargains on offer . Eurodomino not viable for one trip through France as Sncf is one of the more expensive networks .

There are such things as all rail rovers which cover pretty much all of your journey except the eurostar and airport express services (see link below for restrictions) in the uk and are valid for 14 days see this link to national rail enquiries which give you much information about this ticket which includes participating train companies, stations anf prices

http://www.nationalrail.co.uk/times_fares/promotions/pr569241c35ce74100fb0de1b9798124/details.html