Advice on 3PL storage and management prior to FBA

Hi All, Just looking for some advice for a new seller. We have quite a large amount of one product about to ship from china to the UK after trialling a smaller batch over the last few months. Could anyone recommend a way, solution or services for storing products in the UK then being able to ship directly to FBA as and when we need to?

Do you use a good 3PL service? Is there an affordable way to store products in the UK? Especially since the restriction at amazon on sending in inventory!

Any advice would be most appreciated?