Woodfordes kits are notorious for stuck brews (around 1020), as is anything made by Muntons.
http://www.muntonshomebrew.com/other-products/other-branded-homebrew-kits/
The only time I've managed to get a stuck brew going again is:
- a good stir but gently so you don't introduce oxygen to oxydise your beer (sanitise the strirring impelent of course)
- get the temp up, 21C or more
- add some fementables such as 150g sugar dissolved in a little water. Boil and cool first though
And if it's still stuck you can also try amylase enzyme
You can reduced the risk of a stuck brew with a Muntons kit by adding a teaspoon of yeast nutrient at the start and keeping the temp around 20/21C rather than the recommended minimum 18C.
http://www.muntonshomebrew.com/other-products/other-branded-homebrew-kits/
The only time I've managed to get a stuck brew going again is:
- a good stir but gently so you don't introduce oxygen to oxydise your beer (sanitise the strirring impelent of course)
- get the temp up, 21C or more
- add some fementables such as 150g sugar dissolved in a little water. Boil and cool first though
And if it's still stuck you can also try amylase enzyme
You can reduced the risk of a stuck brew with a Muntons kit by adding a teaspoon of yeast nutrient at the start and keeping the temp around 20/21C rather than the recommended minimum 18C.