Calvin Harris and Emeli Sande are fighting a very close battle to top the UK artist albums chart this weekend with just a couple of hundred sales separating them.

Harris's Columbia-issued 18 Months is currently in the lead, according to the Official Charts Company's latest midweek figures, but there is every chance it will be overtaken come the end of the week by Emeli Sande's Our Version Of Events. The Virgin album was the top artist seller of 2012.

A ...