I have in my possession a JVC headunit...will I need any special parts or bits and pieces to fit it to my 2005 Fabia Elegance? I have very little experience with ICE

Stereo removal keys.

OEM if you can get them, Or Kenwood keys work

An aftermarket harness will make life easy,

And one of these.

Skoda UK Fabia >07 Radio Facia Adaptor, when Non-Genuine Headunit is fitted - 6Y0857231B41

If you are buying from a local supplier and they sell Autoleads, part numbers you are after are:

Removal Keys

FP-20-00 Facia Panel (£10-£15)

PC2-69-4 Harness Adapter (£10-£13)

PC5-52 Aerial Adapter (£3)

Hey presto

Buy the facia panel from the dealer, it costs about £4.50, which is a lot cheaper than the aftermarket autoleads one.