You can buy Vango packs of poles, which I did, 11 and 12.7mm complete with elastics and ferrules. They're a tad longer than needed but easy to cut down to size. Then carry a couple of each every time you go camping in case of further breakage (cut to size first unless you carry tools).
Hi, Thanks very much for your reply and that all makes complete sense so will order elastic tonight and get fixed. I really appreciate this as was at my wits end."