Found a pre-framed honeycomb bed on ebay UK for anyone that’s interested, ships from China :
If you are prepared to fiddle around expanding your own honeycomb you can buy it here without a frame: http://www.ebay.co.uk/itm/10mm-thick-cell-6-4mm-Honeycomb-aluminium-beds-Laser-machine-honey-comb-/141759884244?var=&hash=item21018c2bd4:m:mxp2yfJ1CTsxskQNXmPjXCQ