SNP’s Westminster group have called for Scotland to be given “compensation” for the economic effects of Brexit.Ian Blackford MP, the party’s Westminster leader, has described leaving the European Union, which was finalised on December 31, as an "act of economic vandalism".The Scottish Government has said changes to customs and exports could cost the UK £7 billion annually, while Constitution Secretary Mike Russell has said Scotland's GDP could drop by 6% in the next decade.It is not clear how