Hi Stuart, I've been this road even ordered a tool from vw as I thought it was such a waste to fit arm for 60 quid when bush is only a fiver. Tool turned up didn't see one for 4-5 month's then one came in we had bush in stock yippe I thought , I then dicovered I was the proud owner of a golf rear axle bush tool ARHHHH....... Phoned & they couldn't get part number for right tool & said that they only supply the arm's & never fit bushes & that was that, if you find a vag part no for one I'd be keen to have it.
Sorry not much help but I can see where your coming from.