[Dazbox]

On my old commute I cracked the indicator lens in the mirror on a large branch in the hedge on my MY13 V60, this eventually led to the lens going green and the bulb eventually giving up the ghost. I believe Halfords listed it as a bulb but decided I needed to replace the lens as well. Thought I would need a complete new mirror but you can get the lens separately which incorporates the LED bulb and upon further investigation the LED looks to be part of the lens therefore you cannot buy just the bulb.(found it on EBay initially, but the dealer was just as cheap and on the way home)

To replace it the housing needs to come off, which I think is easier with the mirror off, as you need to get at the housing tabs in the mirror, although if you have a long enough screwdriver might be possible without.