@dubber and @Alex here goes:
Headlight washer harness from Kufatec – Approx. £30
Larger water bottle – 1K0 955 453 S – Approx £30
Washer level switch – 7M0 919 376 - £7
Rubber washer - 7M0 919 382 - £2
Rubber washer - 6N0 906 102 - £3
Pump – 3B7 955 681 - £25 (Ebay but new, VW = more expensive)
O ring washer for above – N 903 038 01 - £1
Washer hose comes in coils of 5 m (you need 3 ish) - £8 per m!
Here are all the little bits – depending on how you can route the pipe some of these (one or two ) may be spareAngled Piece - 1J0 955 665 A - £2
Distributor – 7L6 955 873 - £2
Cable tie with terminal socket – 3D0 971 838 E - £1
Terminal Clip for hose X8 – 1J0 955 846 - £2.50 In total
Connecting part x2 – 1J0 955 665 E - £3 Each
Lift Cylinders (Jets) x2 - 1K5 955 978 – Approx £21 each
Nozzle Carrier left – 1K6 955 103 – Left - £10
Nozzle Carrier left – 1K6 955 104 – Right - £10
Speed nut x4 – N909 591 01 - £1 total
Panel bolt for above x4 – N103 546 02 - £1 total
Junction – 1T0 955 975 - £2
Junction – 1T0 955 665 -£2
Gasket – 431 955 465A - £1
Bumper mouldings1K0 807 717 E GRU – Left - £11
1K0 807 718 E GRU – right - £11
1K0 955 109 A – Left - Cover for the jets - £8
1K0 955 110 A – Right - Cover for the jets - £8
I think that's everything