Fruit trees in partial shade

[Nicola.P]

I have a bed about 6.5ft by 6ft which can be made slightly bigger if needed where I wanted to plant: Discovery apple, Victoria plum, Williams pear and a 4th as yet unknown.
It is south facing but in partial shade due to the guy in front having 7ft blue netting hanging up! They would still get some sun so are they ok to plant in that spot?

Also I know you can get dwarf varieties but can you just prune full size versions to keep them smallish?

Also I could extend the bed to 7ft by 6ft in which case could I then fit 2 of each for the apple, pear and plum in that space?

[Bigmallly]

Fruit tree spacing and planting distances

[Thelma Sanders]

You can plant cordon apples/pears 2ft apart and tied to wires, but plums are usually too vigorous to grow like this.

https://www.rhs.org.uk/advice/profile?PID=87

[boundtothesoil]

They would still get some sun so are they ok to plant in that spot?

Also I know you can get dwarf varieties but can you just prune full size versions to keep them smallish?

I think the trees will be fine in this spot. There's plenty of light available from the sky provided you are not in full shade. On average about half the light received is 'direct' from the sun, whist the other half is 'diffuse'. (i.e. light on a cloudy day).

Not sure what you mean by 'full sized' trees. What root stocks are they going to be on? Where I live, trees on MM106 grow to 10-12 ft high, whilst those on M26 barely manage 6ft. It's easier if you can match the rootstock to you're desired final height from the start, rather than embarking on an annual struggle to restrain a potential giant. In the latter case you could easily end up with a tree having relatively few fruiting spurs after a few years of repeated hard pruning.