Could these be what you are looking for?
http://www.wickes.co.uk/double-sided-timber-connector-dstc50/invt/214981/?source=123_74&tmcampid=104&tmad=c&tmplaceref=PPC_ggl_0006635&tmcustom=mkwid|W5fPyZGt|pcrid|7531858372|match||plid|&gclid=CPr4-ZvT6rcCFbMbtAodmHAAmg
