"Gill Matthews" says...
Grow one of the sprouts like Peer Gynt or Bedford fillbasket that support
a high
planting density (50 cms between plants) some other varieties need
distance
of 80+ cms between the plants and you do not seem to have much space.

Also if you soil veers towards acid add some lime 25g/sq m ish

Beat me to it, but tall sprouts will need staking if you grow them raised up
into the wind.

--
Regards
Bob H
17mls W. of London.UK