British achievements

That's quacktastic!

Thrust SSC

- Staunton chessmen (Jaques of London, 1849), which is still the standard design today, copied (with varying degrees of accuracy) by countless companies over the past 174 years. They were beautifully carved too:

https://en.wikipedia.org/wiki/Jaques_of_London#/media/File:JaquesCookStaunton.jpg

- Cheddar cheese (Cheddar, England).

- The World Wide Web (Tim Berners-Lee), not to be confused with the internet itself, which is an American invention.

- Webley revolvers, which are so ugly that they're oddly appealing.

- The finest double rifles in the world (from e.g., Holland & Holland, Purdey, and Boss & Co., all out of London, England).

- Jaguar E-Type / XK-E.

- Linsey Dawn McKenzie, who, in her prime, had some of the most impressive boobs ever built. Unfortunately, in a sacrilegious act of self-mutilation she hired some jackass to hack the bulk of them off, and to make matters worse, she soon regretted it and had disgusting man-made silicone tumors installed in her chest by some other jackass to replace the marvels of nature that she had so wantonly destroyed a year or two earlier.

Many of the greatest bands ever came from England.

They have practically everyone on the planet speaking English.

Introduced the first emergency phone service (999) in London, in 1937.

Dolly the sheep, the first cloned mammal, in 1996.

RADAR
Television
Industrialization

A truly impressive and monumental achievement.
The Luftwaffe were very intimidating, they had some of the best pilots, fighter planes and bombers in the war and were eager to destroy strategic and civilian centers.

The RAF sent their survivors flying home in tatters.