sadly the LEDs have packed in is there anywhere to buy new lights or a cheaper alternative as the light I’m finding are more expensive than a new scrubber!
They're not under warranty I take it? Since that unit has the lights in close proximity to the water, you're going to be pretty limited in what you can use. I'm pretty sure the GEM lights are all you can really use in that unit. I suppose though you could remove the cover and fashion some more off-the-shelf fixtures to do the job, but you're going to lose the light blocking ability of the unit.
Those gem5 lights are one heck of a price, not really worth replacing, I suppose the scrubber goes in the cupboard until those lights are more accessible in the uk