Beta This part of GOV.UK is being rebuilt – find out what beta means

HMRC internal manual

Capital Gains Manual

Traded options: LIFFE: standard form: American style and European style contracts

European style options can only be exercised at the expiry date. American style options may be exercised on any business day during the option period.

The terms European and American merely refer to different types of option. They have no geographical significance in this context.