Hiya again!
Did a bit of research all shops were closed due to christmas. I spoke with halfords and the guy said for the rear door speakers, fitting costs would be £39.99 which includes wiring installation charges if the wiring is not present. I'd also need an adapter at an extra cost of £19.99. The physical wire itself I'd have to pay for by the meter (I can't imagine that costing much). And on top of that the price of speakers and tweeters I can choose from a selection. So around £120 for the rear door speakers and tweeters from Halfords as compared to the £340 quote which i got from th VW dealer. I was well chuffed.
Also Captain sensible regarding your post on the SatNav. Mate it all depends on how much you want to spend. You can get it fitted from VW dealer which would probably cost you around £1000-£2000 i'm not sure but not any less. I found a nice solution for around £500. I bought this from ebay.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=220525736157&ssPageName=STRK:MEWNX:ITCost me £285 + Delivery + extra for DVB-T upgrade => total about £360. This is one of those china made inbuilt nav systems with all the extras that you do not get from the original VW dealer including Digital TV, DVD player etc. Great thing about this one is that the look and feel of this is in line wiht the whole VW interior unit and you don't need an adaptor for it u just take your old one out and put this one in. I spoke with a mechanic or whatever you call them in one of the auto car centres in cardiff and he gave me a quote for £50-70 for installation. He asked me to bring the equipment in so he can see it before he can book an appointment for installation. I haven't had time yet but will go on monday. I also got front fog lights for this golf:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=190357973160&ssPageName=STRK:MEWNX:ITand hoping to get that fitted also. All in all I'm quite looking forward to getting these new equipments installed in my new golf cos they are a LOT cheaper than what the dealer quoted. If i get these done from VW dealer probably cost me over or around £2000 and I'm getting it done for around £650 which is absolute bargain.
N.B. Once installed I'll try and upload some pics and maybe a review.