kieran wrote:boat or shore or both?
Boat should have buoyancy built in, clip for rescue, proper flashing for illumination, and some degree of insulation for countering hypothermia. More expensive. Worth it.
Few boat anglers are using floatation suits nowadays. They are too inflexible for the normal Irish conditions. Fine for fishing in places like Norway where the average temps can be lower, but not for normal fishing in Ireland. A good breathable bib n brace matched with a decent jacket combined with layers of warm clothing is the best option all round. All topped with preferably a decent life jacket or minimum a decent buoyancy aid. You will need to decide whether you want breathability or hard wearing. Hard wearing will have you sweating underneath while breathable will be more comfortable. Hard wearing will find you looking at Guy Coten and suchlike. Vass make some of both. I use Climb8 breathables from Co. Mayo and think they are a quality product.
Most boat anglers are layering their gear. Bases layers that can be removed covered by waterproofs when required. Most will wear a bib & brace for keeping clean and dry. Many small boat anglers wear breathable waders instead of a bib & brace where they expect to be in the water while trailering etc.