Ok, so as mk7gti was given an update today I thought I'd try my luck with VW on twitter. Here is the (email) reply, and good news I've moved up a week from 27 to 26 (provisionally) woo hoo!
"Thank you for your contact in to our Twitter page regarding your Golf GTI order.
We have spoken with our Product Marketing Team and also our factory in Germany and can confirm your vehicle is scheduled to build in week 26 (w/c 24/06/2013).
At this stage the factory can not confirm to us a more definitive date to build your vehicle, we will have more information within the coming weeks which is why we quote 'lead times' to our retailer network. These lead times are the average build a specific vehicle can take and helps them to manage their customer expectations.
To ensure customers are being given the most up to date information possible, the factory and in tern Volkswagen UK quote the maximum lead time of 16 weeks for all newly released models. We do however, know your order will build and arrive in the UK before then.
When we place an order in our factory system it is given a scheduled build date which, until the factory confirm the build week is subject to change. There can be many reasons for the change but for many it is purely capacity on the production line.
The likely hood of your vehicle moving from week 26 production is very low but until it is confirmed by the factory your retailer will be unable to commit to a delivery date. Once we know your vehicle's confirmed build date, an estimated delivery time can be arranged.
We appreciate this may not be the response you were hoping for and do understand our customers frustration when wanting more detailed information.
If you do require anymore information about lead times and how the Volkswagen supply chain works, it may be worth reading more on the link below to our Facebook page or speak with your retailer.
https://www.facebook.com/VolkswagenUK/app_362476440451045Keep in touch with your retailer for an update on your order, once it is confirmed they'll be able to advise you.
Many Thanks
Social Media Customer Relations Team
Volkswagen UK Customer Services"