Fixed it!
Cannot believe I've managed to get it all up and running.
I sourced some 0.5mm pitch 50 pin FFC cables from
www.digikey.com and they arrived in the UK in 5 days.
Bought 3 different lengths and had to modify the width (no of pin outs) for the front panel and motherboard to fixed front cable but was quite easy.
Now have a fully working T3 and am very pleased.