Britain in 3 Days on a Budget (With Daily Costs)
Three days extends the 2-day Cardiff overnight with a York day trip tacked on after returning to London, about 2 hours each way on LNER from Kings Cross, with the free National Railway Museum as the day’s anchor. Same spine, one more day. Need more room? See the 4-day through 6-day versions.
Book these before you go:
- Cardiff Castle entry : GBP 16.50 adult, skip it and the grounds are still free from Bute Park
- Somewhere to sleep for one Cardiff night : hostel dorms from roughly GBP 10-15
- Somewhere to sleep in York : only needed if the last train home doesn’t suit, York hostels run from roughly GBP 16-20
| Day | Stop | Travel time from London | Cost per person |
|---|---|---|---|
| 1 | Cardiff arrival, free museum, Cardiff Bay | about 2 hours (GWR, Paddington) | ~GBP 29-40 |
| 2 | Cardiff Castle, train home | free from Bute Park, GBP 16.50 inside | ~GBP 16.50-30 |
| 3 | York day trip, National Railway Museum | about 2 hours (LNER, Kings Cross) | ~GBP 25-40 |
Day 1: Cardiff arrival and the free National Museum
GWR runs direct from Paddington to Cardiff Central in about 1 hour 50 minutes to 2 hours, Advance singles from around GBP 29 booked a few weeks out. The National Museum Cardiff is a short walk from the station and free for its permanent galleries, easily a full afternoon without spending past the train fare. Cardiff Bay’s waterfront and the Wales Millennium Centre’s exterior cost nothing to walk in the evening.
Day 2: Cardiff Castle, then home
Spend the morning at Cardiff Castle if the GBP 16.50 ticket made the cut, or walk Bute Park and the Castle Quarter’s arcades for free if it didn’t. Lunch in one of the Victorian arcades off St Mary Street, then the afternoon train back to Paddington.
Day 3: York and the free National Railway Museum
LNER runs direct from Kings Cross to York in about 2 hours, Advance singles from around GBP 25 if booked ahead, with roughly 30 direct trains a day so an early departure and a late return both exist without needing a York hotel night. The National Railway Museum , part of the Science Museum Group, charges nothing for general admission and holds the Flying Scotsman under one roof, genuinely worth 3-4 hours. York Minster’s exterior and the medieval Shambles cost nothing to walk past on the way back to the station.
Do I need to book the National Railway Museum in advance?
Not really. General admission stays free and walk-up entry works most days, though a free timed slot booked online avoids any queue on weekends and school holidays. There’s no ticket to buy either way, so the real planning decision is just which train gets you home before the museum closes for the evening.
Before you go
Both legs run on Advance singles, book them the moment the dates are fixed rather than waiting. A UK contactless bank card works on buses in both cities exactly like it does on the Tube. Running total for the three days, transport and entries only, lands roughly GBP 70-110 per person depending on whether the Cardiff Castle interior gets added.