I took a high-speed electric train from England to Scotland, and I still can't believe the 400-mile journey cost just $64

Back in June, I spent five days in London for the Queen's Platinum Jubilee. After traveling from my home in Scotland to the capital on a $257 first-class Avanti West Coast train ticket, I wanted a cheaper option for the journey home. So I booked a ticket on Lumo's high-speed electric train service.

The journey from London King's Cross Station to Edinburgh Waverley Station took just over four hours and cost around $64.

I thought it was a quick and affordable option, as the same journey would have taken seven hours and 24 minutes via car, according to Google Maps.

I recommend it to those who regularly travel between the two cities or those planning an affordable weekend trip to London.

Insider paid for the trip, as per our reporting standards.

It marked my first time booking with Lumo, as the company launched its high-speed services in October.

I liked that the company aspires to be environmentally friendly without charging passengers a hefty fare.

Its electric trains run exclusively on the east coast of the UK between London and Edinburgh, with fares starting at around $18, according to its website.

Lumo's services from London to Edinburgh are six times less polluting than the same journey via plane, according to its website. Electric train travel has become more common in recent years, as almost half of the UK rail network is now electrified, according to Network Rail.

King's Cross Station is one of the UK's most well-known train stations, partly due to the fictional Platform 9 3/4 in the "Harry Potter" franchise.

When I arrived for my journey on June 5, the station was filled with people — an indicator of how busy my forthcoming train was set to be.

My seat was assigned to Coach E, which was in the middle of the train. As I passed other carriages to get to my seat, I realized that they all looked the same and that there was no first-class carriage.

Later, I researched the Lumo website and discovered that the company only offers one ticket type so that all passengers receive the same "high level of service." In comparison, Lumo's competitor Avanti West Coast provides first class, standard premium, and standard class tickets.

I thought this was smart, especially since some first-class tickets often go un-purchased. The train operator utilized space by not including it as an option.

Although the train was busy, this didn't affect the quality of my journey, as I had a pre-assigned seat with my ticket.

I was traveling with a tiny carry-on suitcase, and I boarded the train relatively early, so I could fit my luggage on the overhead shelf above my seat.

But I witnessed passengers with larger suitcases struggle to fit them on the shelf, and there was no luggage rack in our carriage.

Shortly afterward, the train conductor announced that luggage racks were for larger suitcases, but passengers would have to go to Coach B or Coach D to use them.

As I was traveling with a friend, we could book two seats next to each other. The space was limited — and if I had been seated with a stranger, I think it would likely have felt a bit tight.

But that was to be expected, especially as our seats came with a pull-out tray-table as opposed to an actual table, which would have allowed for more leg room.

We each had a pull-out table attached to the seat in front of us which had a light for reading. The reading light stood out to me, as it's something I hadn't noticed on trains operated by Lumo's competitors.

There was also an outlet attached to the bottom of the seat for laptop or phone chargers.

The table came in handy for passengers like myself, who brought food onto the train, and for other passengers who may have purchased food on board.

Passengers are able to pre-order a variety of hot and cold food and beverages ahead of the journey through the Lumo website.

Even though my friend's seat was closest to the window, I could still easily see the views of the British countryside and greenery, which included plenty of rolling hills and fields.

Lumo offers complimentary Wi-Fi on all of its services. The train conductor told us that we could access the Wi-Fi through Lumo's webpage, but when I tried to log on, it was slow and wouldn't fully connect.

I hoped I'd be able to work during the journey, as well as browse some of Lumo's entertainment options through its webpage. But I wasn't surprised I couldn't log on, as I've never been on a train with good Wi-Fi.

The bathroom had a toilet, a sink area, a mirror, and a full-length mirror next to the door (not pictured).

Although it wasn't the cleanest (tissue was sprawled across the floor and hairs were scattered on the sink), it wasn't too bad compared to train bathrooms I have used in the past.

While there were some kinks along the way, it was nothing I hadn't seen before and my journey was overall easy and enjoyable.

As somebody who travels often for work, Lumo was an affordable and sustainable option for me, and I'd recommend it to anyone looking for an alternative to flying or driving.