It depends on the version.
The Mark 1 was capable of about 360 mph (the prototype was ~340 mph), the F Mk 24 could do around 450 mph.
The ultimate development (the Spiteful) was capable of 480 mph.
The Supermarine Spitfire was designed and built by Supermarine.
1,135 miles for the MK XIV it was 800 published by an eleven year old
no
The Spitfire was designed by RJ Mitchell, and built by Supermarine. Many of them were maunfactured in Southampton in Britain.
Supermarine was the company who built the spitfire. ie: North American P-51 Mustang, Republic P-47 Thunderbolt.
550mph
The Spitfire was designed at Supermarine Aircraft Works, Woolston, Southampton, England.
A Supermarine Spitfire was a British fighter plane used in world war 2.
409mph
Yes
R J Mitchell
The Spitfire could reach 606 mph .