A Look At Eurostar: London St.Pancras To Paris Gare du Nord

Eurostar is an international high-speed rail service connecting the United Kingdom with France, Belgium and the Netherlands. Most Eurostar trains travel through the Channel Tunnel between the United Kingdom and France, owned and operated separately by Getlink.
The London terminus is London St Pancras International; the other British calling points are Ebbsfleet International and Ashford International in Kent. Intermediate calling points in France are Calais-Fréthun and Lille-Europe. Trains to Paris terminate at Gare du Nord. Trains to Belgium and the Netherlands serve Brussels-South and Rotterdam Centraal, before terminating at Amsterdam Centraal. Additionally, in France there are direct services from London to Marne-la-Vallée-Chessy (Disneyland Paris) and seasonal direct services to southern France (Lyon, Avignon and Marseille) in summer, and to the French Alps in winter.
The service is operated by 11 Class 373/1 trainsets, each with 18 coaches, and 17 Class 374 trainsets, each with 16 coaches. The trains run at up to 320 kilometres per hour (200 mph) on high-speed lines. The LGV Nord high-speed line in France opened before Eurostar services began in 1994, and newer lines enabling faster journeys were added later: HSL 1 in Belgium and High Speed 1 in south-east England. The French and Belgian parts of the network are shared with Paris-Brussels Thalys services and TGV trains.
Eurostar is operated by Eurostar International Limited, jointly owned by SNCF, the national railway of France (55%), investment firms (40%), and the National Railway Company of Belgium (5%).
In December 2021 Eurostar said it intended to move its administrative activities from London to Brussels, citing problems with doing business in the UK and stating that being based in an EU country would make expansion and development easier. Administratively Eurostar is merging with Thalys, combining ticket sales in a single system, but the Eurostar brand and train liveries are to be kept separate from other Thalys operations.

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I am going to europe next month starting with london which after a few days there ill go to paris via the eurostar this video helps me understand how it looks Thanks!