Headlamp holder

[MrF]

So just bought a 54 plate 2.0 DTI estate, few issues....number one to sort was a blown headlamp bulb...and thats where the problems started.
Pulled the passenger side one and discovered some melting of the bulb holder, no wonder 100W bulb. Replaced it (had to use a little force to break the bulb free of melted plastic), works fine.
Went to swap the drivers side so the colour temp would be the same and to save likely changing it in a week or so, and discovered it was wedged in (explaining the pee poor headlight on that side) as one side is entirely melted away, both the holder for the bulb and the exterior plastic "sleeve" that holds the bulb holder and metal bracket together.
I can get an H7 holder with little no issue online, but its the plastic sleeve that is proving to be an issue to find (or I'm just not giving google the right wordings)
Any idea for a source other than Vaux? (unless Vaux are cheap enough for the part?)
Thanks

[Chip]

I'm pleased I went with the 55w bulbs now!!

[MrF]

Ok so Vaux dealer locally reckons only able to supply a full headlight assembly.
Turned to Ebay...seller reckons can do fittings and the wires for both sides for £23 inc postage...so meant to be coming next few days
(Good because the MOT is up in April...)