Travelling between Oxford/London and Paris
This article contains some information on how to conveniently travel between Oxford (or London) and Paris.
Between London and Paris
The choice between plane and train is an easy one. With the high speed Eurostar train you can travel between London and Paris in just over 2 hours. This is not only more comfortable and environmentally friendly than flying, but it is usually faster and cheaper too. The train runs from St Pancras station in London to Gare du Nord station in Paris. Booking your train online is very convenient, but in order to get the cheapest tickets you will have to do so a few weeks in advance. In that case you will pay well below £100 for a return trip. There don't seem to be any student deals, but if you're under 26 you can get a youth ticket. If you want to avoid the £3 credit card handling fee, you can pay with a debit card (Solo/Maestro).
Power sockets are available on Eurostar trains in both the UK type and continental type, but if you want to use them, you need to book accordingly. There is only a limited number of seats with power sockets available in Standard class, and their type (UK/Europe) alternates between the seat rows. Therefore you should manually select your seat during the online booking process. When doing so, you need to look for a train compartment that has power sockets (usually compartment 4 or 5), and then look for the labels UK or C (continental) next to the seat rows.
The WIFI situation seems to be really bad, as you can go online only during train stops at stations, and even then you have to pay for it. Lucky are those with mobile internet plans and/or mobile USB sticks.
Between Oxford and Paris
How to travel between St Pancras and Oxford? You have the choice between train and bus here. They both bring you to central London (in 60 minutes and 100 minutes, respectively), but neither of them runs directly to St Pancras station. Trains usually run till Paddington, so you need to connect via the Tube from there. You can get very cheap train fares if you book a bit in advance (as low as £7). On the other hand, the price of the bus tickets is fixed and they usually can't be booked in advance. This makes the train an attractive option for journeys that are planned in advance, and the bus services the perfect choice for spontaneous trips to London.
If you decide to take the bus, you have the choice between two companies that offer bus services between Oxford and London. These are the Oxford Tube and the Oxford Espress. They are very similar to each other, with nearly the same fares and stops, and both of them offering free WIFI during the journey. You can just take whichever of them arrives first, but if you buy a return ticket, you need to keep in mind that the companies don't accept each other's tickets.
