NXT is a meguiars range, most of which is available in halfords, in this case its the shampoo.
waffle weave is a drying towel, it absorbs alot of water.
menzerna is another brand of cleaning products in this case i guess its a harsh polish to cut back to fresh paint. german applicator? not surebut i'd imagine its a closed foam applicator pad.
autoglym SRP = Super Resin Polish. a good cheap polish, good for hiding swirl marks if several layers are applied and also available from halfords.
megs #21. megs is short for meguiars and the #21 is a sealant, which kinda protects the paint and helps add depth to the coats of super resin polish.
this car was done by hand and so would have been done with these german pads he mentioned and removed/buffed off with microfibre cloths.
without going crazy you could buy meguiars number 1 paint cleaner, autoglym super resin polish and meguiars NXT wax all from halford in their 3 for 2 deal on cleaning products. plus some NXT shampoo, some applicators and some microfibres, again in the 3 for 2.
hope that helps some.