Re: Beaconsfield, you can also go from High Wycombe (M40 J4), some trains start there on the Chiltern Line so you’ve a much better chance of a seat. although the council have now put the car park prices up at the multi-storey by the train station to bring it in to line with the station itself. Otherwise there are residential streets around that you can park on, or Railway Place which is cheaper. There’s also The Rye which is £5 for the day and about a 15 min walk to the train station. There is also a park and ride right by the motorway junction that takes you to the station.