I can second both Proshrimp and Horizon. Have spent a hefty amount on both sites. Proshrimp is definitely the cheaper of the two though. They also have a clearance section with plants that are quite cheap. Just had a look and there's some Buce for £3.99 which I'm probably going to buy nowAqua Essentials, ProShrimp, k2aqua on eBay, Horizon Aquatics.
I have shrimps and snails so I need plants which have not been treated with insecticide or snail killers. In other words, plants grown in the UK or the EU, and all these shops guarantee shrimp safe plants.
Edit to add - of all these, I leave not too far from Horizon Aquatics and they now seem to be specialising in in vitro (tissue culture) plants.
What does vitro plants mean ? Sorry I’m new to all this lolI'd not come across that site before, looking now they sell only in vitro plants, so if you ever plan to have shrimps or snails in the tank they'd be fine - no chemicals to kill them.
Keep an eye on the weather forecast before buying and avoid any very cold overnight
from Google - The in-vitro cultivation of plants means, that individual cells or plant parts are cultivated on nutrient media under sterile, laboratory conditions. By adding certain growth regulators such as phytohormones, new and intact plants can be generated from small pieces and even cells.What does vitro plants mean ? Sorry I’m new to all this lol