England/UKs Tectonic Plates

 England is located primarily on the Eurasian Plate. England/UK are not technically located on any one plate margin, so they are not active tectonically. That does not mean it has not been active before; according to The Geological Society that "a series of tectonic events has resulted in the current location and structure of the UK - in the last 700 million years, we have gradually drifted north from near the South Pole!". The current location of England/UK is more south of the North Pole than originally in years past. The closest plate boundary to the UK is a Divergent Plate Boundary on the Mid - Atlantic Ridge. It is located in the middle of the Mid - Atlantic Ridge, so it is distant from where earthquakes can cause tsunamis. The U.K. and primarily England have minimal earthquakes according to a U.K. news website Express "on average the earthquakes in the UK range from magnitude-0.7 to magnitude-2.0." Overall, England and the other sections of the U.K. are very distant from any plate tectonics, which explains why there are not many large earthquakes, tsunamis or volcanoes nearby eager to erupt. 

Sources:
The Geological Society: https://www.geolsoc.org.uk/Plate-Tectonics/Chap4-Plate-Tectonics-of-the-UK

Express: https://www.express.co.uk/news/uk/1232538/uk-earthquake-news-bgs-how-many-earthquakes-in-uk-most-earthquakes-in-the-world-usgs#:~:text=But%20on%20average%20the%20earthquakes,%2D0.7%20to%20magnitude%2D2.0.

National Geographic Map Maker: https://mapmakerbeta.nationalgeographic.org/map/692b3ff1cd60449da2e882085f631c4e