not giving you a script to "shop around" with is not unique to boots they all try it
Best knives I have - better than sabatier - are pro cook https://www.procook.co.uk/shop/knives-scissors/chefs-knives etc.
The Range here - a sort of pound shop/Wilko combo. At least they sell bicarb and citric acid.
Shop around a bit more.
In article , ARW writes Or polysulphide if you want the option to overpaint later: http://www.toolstation.com/shop/p52048
Simply a water level; http://www.toolstation.com/shop/Hand+Tools/Levels/Water+Level+10m+x+38/d10/sd40/p21198
My local pound shop has PP3 carbon by Panasonic at a quid each. Didn't think that good value.
Just shop around for offers.
Meanwhile this has all cost more than a flatter bit of material from a shop of course... Brian
I bought some when the local proper HW shop closed. In the end my brother used it. Andy