British sovereignty over Gibraltar remains "sacrosanct", the foreign secretary has said, after the UK agreed a deal with the European Union over the territory's post-Brexit future. David Lammy told the House of Commons the agreement included a clause "explicitly protecting our sovereignty".

Gibraltar is to impose a 15% sales tax on goods under a Brexit deal, which will eventually see the British territory enter a customs union with the EU.

The European Union (EU) and Britain reached an agreement on the status of the overseas territory of Gibraltar on Wednesday which facilitates border crossings and ends years of political uncertainty.