However, physical indicators in the Chinese market have turned more constructive of late, signaling tightening conditions.

FORBES: Barclays: Commodities Mixed In 2Q So Far; PGMs, Copper Should Improve

"Visits must have a meaningful impact on detention conditions, and dialogue with the detaining authorities must be constructive, " said Mr Daccord.

BBC: Map of Uzbekistan

Simon Steele-Perkins from SLP said during "constructive" talks with the parish council two years ago, pre-conditions discussed included finding solutions to Feniton's flooding.

BBC: Feniton flooding, November 2008