New owner of old XF - new alternator required?

[Scankguy]

Hello all. I bought a 2011 XF from an auction last week, looks lovely but it sucks the charge out of starting packs and dies. Wasnt too surprised it had issues as auctioned, first thought the battery was tired as very cold day. Guys from the auction place started it with a starter pack, engine dies as soon as pack disconected. It emptied the pack when connected to drive out of the secure car park. Emptied the towing service guys starter pack without even driving off the trailer.... Battery is currently charging and will see if it holds charge later.. The car did drive itself into the auction and back to the parking lot (without issue the guys told me).

Sounds like an alternator to me.... Utube shows this replacement is a reasonable DIY job so will have a bash when the weather is better. But I would like the car serviced and inspected for other faults by a competent independant garage ideally with the Jag diagnostics. I live near Kinross so any reccomendations of a garage around the central belt of Fife, Clacks or Perth would be a great help.

Thanks!