Wetsuit Advice for a Newbie

Hi Guys
I'm getting my first wetsuit on saturday and am looking for some advice from you seasoned pros...
Ideally I'd like to get a shorty for summer use and a steamer for the rest of time.
Will a shorty be warm enough for UK waters in June-Sept though? (Or am I better just getting an all year round steamer?)
Also, what thickness should I go for with the steamer for Autumn -> Winter -> Spring use? 5/3, 5/4??
Ta muchly
Ga
I'm getting my first wetsuit on saturday and am looking for some advice from you seasoned pros...

Ideally I'd like to get a shorty for summer use and a steamer for the rest of time.
Will a shorty be warm enough for UK waters in June-Sept though? (Or am I better just getting an all year round steamer?)
Also, what thickness should I go for with the steamer for Autumn -> Winter -> Spring use? 5/3, 5/4??
Ta muchly
Ga