I am lucky that I have the opportunity to visit some of the Royal Horticultural Society gardens as part of my work. A visit last month gave me the opportunity to see some clever training of apple trees as double cordons creating a brilliant effect as well as abundant fruit.
Cordons need careful summer pruning to restrict vigour but allow easily access to fruit and are attractive in their own right, They also allow several varieties to grow in one small space meaning you can have a reasonable quantity of fruit from several varieties rather than a mass of fruit all at one time from a single variety.