Is it possible to use these
http://www.screwfix.com/p/standard-junction-box-20a-4-terminal/80193
fixed to joists under floor boards/in celing with cable secured with clips
or these
http://www.sparksdirect.co.uk/17th-...-ashley-20a-loop-in-and-loop-out-p-15096.html
http://www.screwfix.com/p/standard-junction-box-20a-4-terminal/80193
fixed to joists under floor boards/in celing with cable secured with clips
or these
http://www.sparksdirect.co.uk/17th-...-ashley-20a-loop-in-and-loop-out-p-15096.html