As someone who uses bike + train as their main mode of transport and over the past few years has been on several trips in the European mainland (France and Italy so far), I'd like to provide a slightly different perspective:
European rail networks
Pros
- Usually one website/app for all rail travel in a given country, no screwing around with different franchises
- Cheaper tickets usually
- Faster trains with often better quality furnishings
- I've never had luggage in the way of where I'm supposed to put my bike
Cons
- Some of the French double decker trains force you to hang your bike in the single level entrance sections, if you want to sit with your bike and stop it getting stolen, you're left with crappy fold down seats.
- I've been on one slow rail service from Paris to Limoges where not only was the carriage entrance way higher than the platform, so pushing the bike on board was difficult, but also the bike carriage seemed ancient and of a poor quality as well as being noisy, compared to the other carriages which while equally old on the outside, were much more pleasant on the inside. So this point and the one above, you're more likely to feel like a bit of a loner in 3rd/4th class on at least French trains.
- Taking a bike on board often costs extra, even if it's only ten or so Euros
- The big one for me - not all high speed rail services take full sized bicycles.
- In addition to the above, it's not obvious which fast services you can take fully assembled bikes on. I usually end up on the Man in Seat 61 site to work it out
-You tell SNCF for example you want to take a fully assembled bike on the journey you're searching for, and if none of the high speed services it'd usually suggest can take full sized bikes, it'll just tell you there's no rail services available...completely ignoring the fact if you just take a series of slow trains, you can just get on trains without reservation
British Rail Networks
Pros
- Vast majority of rail services (excluding commuter and Lumo) will take full sized bicycles, for free. You may sometimes need a reservation.
- You'll usally be sharing a carriage with everyone else, where either you'll have your bike behind you and no-one else can access (Pendolino), it'll be in a cupboard close to where you're sat, hopefully (GWR, Avanti Voyager - ah I guess it's Avanti 80x now) or you'll have a space often near the toilet on the local trains, see cons below for one issue with this.
- Some TOC's like London North Western and Northern will tell you can't take trailers, cargo bikes, tandems, but particularly if the train is quiet or it's a small cargo bike or tandem anyway, you can probably get away with it. In fairness the same might be true of France/Italy but I've never tried it.
- Avanti explicitly allow tandems on their Pendolinos.
- A lot of the local services they'll just let you put a bike by the door on any of the carriages anyway.
Cons
- Franchise system, so each TOC has a different policy, which is difficult to navigate. I don't think European systems are easy to navigate either though. I wanted a bike bag (no full sized bikes on them!) on a Frecciarossa. The dimensions on their site said it was too big, but their staff didn't care 🤷♂️.
- Some TOCs will make you hang your bike, which is particularly restrictive to people with heavy bikes/mobility issues.
- If the train is too busy the platform staff are able to just flatly tell you not to board. Hasn't happened to me yet, fortunately.
- GWR system is particularly ridiculous. The bike storage space is also a luggage space, except you only need a reservation for a bike, but not luggage 😤
I've spent too long on this, thought I might!
The TL;DR from me though is yes, UK rail services are far from perfect (or cheap) but the one advantage we have over Europe (which people generally consider to have a better rail system) is that all routes will carry full sized bikes. That's simply not the case in France and Italy, Spain, and I suspect many other countries in Europe and elsewhere.