Rent 8 Channel Microphone/XLR Splitter in London (rent for £20.00 / day, £8.57 / week)
Cable Matters XLR Splitter Cable, Female to 2 Male XLR Y Cable 45 cm, Microphone Patch Y Cable, XLR Female to Dual XLR Male 3 Pin Splitter Cord Audio Adapter: Amazon.co.uk: Musical