Engine Oil Leak at Alternator mounting N62

[Rick G]

I fixed a leaking cam cover gasket on the right side which I thought was the oil problem I had but there was also oil leaking from under the Alternator bracket.
I have come across a few references to what is apparently a fairly common problem, oil leaking from under the Alternator mounting bracket and am just wanting to know if it is as I suspect a rubbery seal that is not very rubbery any longer or if there is more to it than just replacing the weirdo shaped seal and the 4 O-rings associated with the cooler lines.
I hope that this is all I need as I have already ordered from Pelican Parts in US. 
In Australia BMW parts are priced using the same formula as used for pricing parts for a space shuttle + 87.5%, are there any UK based suppliers that are good with the prices?
With the BMW Bikes, and I have lots of them, I get parts from Motobins which are usually about 1/3 the price of Aussie suppliers including postage.

[Horizon]

Sorry can't help with the oil leak, but regarding BMW parts , with the help of Real OEM using your VIN you can access your cars specific parts catalogue.
I have used Cotswold BMW ( who are a BMW main dealer here in the UK ) Who are members on this site by emailing or personal messaging via this site a list of part numbers for a quote , which is discounted to Xdriver members.
As for non OEM parts such as brakes and service parts a lot on here use Euro Car Parts (ECP , a national motor factors ) but not sure of international shipping facilities.