There are at least 7 bands here.

1) The first incarnation was a little known US psyc/garage band in the mid sixties. playing up tempo r&b.

2) The most successful is a British classic metal band from the 80's who recorded sessions for Tommy Vance's Rock Show, released two EPs: The Bitter End in 1985 and Hot For Love in 1988, and also released 'One Strange Night' , a full album in 1990 on Active Records.
https://www.facebook.com/ExcaliburbandUK
https://twitter.com/ExcaliburRocks
https://www.youtube.com/@excaliburuk




3) A Czech RAC/NS metal band. They formed in Trutnov in the summer of 1994 from the remains of the RAC band Diktátor who released the demo tape "Stále vpřed". Excalibur's first album "Apokalypsa" was in the vein of Heavy Metal with some RAC influences not a world away from Metallica. "Auri sacra fames" diverged towards a mix of Thrash Metal and RAC while "Thurisaz" and "The Water, the Soil & the Sand" went into Death Metal territory.

4) A heavy/speed-metal band from the north of France formed in 1984 from the ashes of Methane. They disbanded in 1987 after releasing two demos. They reformed in 2007 and rereleased their demos on a LP ("Fils Vengeur") in january 2008.
see http://www.myspace.com/excaliburfanpage

5) RAC band from France

6) Excalibur was a Traditional metal band from Spain.

7) Excalibur was band from Kraljevo Serbia, played Heavy Metal music and have one Demo record from 1993.

8) Rock band from Vienna/Austria founded as a school band in 1980, releasing 1982 a single (Land of Fantasy/Sweet Little Girl) and disbanded 1983. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.