A group of friends and I plan to attend to the ArcTangent festival, which will take place in Bristol, UK on August 28–30 this year.
We"ll travel from Belgium to London (St. Pancras) via Eurostar. The matter is the journey from there to Bristol, and the journey back to London four days later. We first thought of going there by train, but it looks costly and quite unpractical, since we still need to go from the station to the festival on arrival, plus the trains' schedules are not very flexible.
So we are thinking of renting a small car there. As we will be four to five to pay for a four days' renting, it will cost more or less the same as train, with all the advantages of having a car – I found cars circa 140£ on the internet. Problem is no one in our group is older than 20, so I am worried about age restrictions or additional costs, e.g. for insurance.
Also if I remember correctly, there's tolls entering or exiting London; is there any way to avoid these?
Beyond these two concerns, any general advice about renting a car in London would be greatly appreciated, as it is the first time we do that, and we don't know exactly how this works. As young students we are looking for the cheapest solution, so if you have any tips or places for low prices, please share. Also if you think of a better alternative to car renting, we are naturally open to anything. Thanks.