Thought I'd reply to this post so people have a bit of an update on prices etc.
I just picked my car up from LVS AG near Lincoln after having the timing chain and tensioner replaced with the latest revisions as a preventative measure. Tensioner was still fine for me but I was having some noise at start up which I believe can be attributed to chain stretch. I checked measuring block 93 using VCDS and found that I was out of the spec suggested on some forums so booked it in to get replaced as soon as I could. For reference these are the topics I was referring to:
http://forums.vwvortex.com/showthread.php?7995554-Chain-Stretch-Limithttps://www.briskoda.net/forums/topic/432610-timing-chain-vcds-measurement/.
I was seeing a value of -4.94 in block 93 before replacement. I'll update this post with my new value once I've had a chance to hook the car up.
Total cost for the work was £872.61. That includes 6.5 hours labour coming in at £468 and then the rest (£404.61) in parts which I will list:
06K 109 158 AD - Timing Chain - £61.08 + VAT
06K 109 467 K - Chain Tensioner - £40.09 + VAT
06H 109 469 AP - Rail (Chain Guide) - £7.75 + VAT
06H 109 509 Q - Rail (Chain Guide) - £12.24 + VAT
06H 109 469 T - Rail (Chain Guide) - £7.09 + VAT
06J 115 403 Q - Oil Filter - £13.24 + VAT
06H 103 483 D - Gasket - £11.58 + VAT
06L 103 085 B - Seal - £6.17 + VAT
D 174 003 M2 - Timing Cover Sealant - £32.90 + VAT
D 154 103 A1 - Sealant - £63.18 + VAT
06H 103 483 C - Gasket - £20.09 + VAT
06H 103 121 J - Gasket - £6.66 + VAT
WHT 007 212 B - Seal Ring - £3.02 + VAT
06H 109 257 C - Camshaft Control Valve - £40.89 + VAT
1K0 201 160 BG - Breather Pipe - £11.18 + VAT
Car feels much better for having had the work done, quiet start up, seems like it picks up better and of course the peace of mind that it's done!