Wiring LED Kitchen Lights to a 3 Pin UK Plug, How?

Hello

I have purchased a set of 3 individual LED Low voltage - 12 Volt, comes with 1 x low energy MR11 LED lamp. And these come with a 7w LED Driver transformer.

Now I simply need to add a 3pin UK plug to the transformer, and I have asked the company supplying the lights, what fuse rating to use and they said either a 3amp or 5amp fuse.

I wondered which fuse rating would be best, as they will be 3 lights Here is the actual product: Pack of 3, LED Overhead Swan Neck Cabinet Lights Including Transformer , in a line through one transformer as well as a remote control dimmer, here is the product: Dimmer For LED Tape | Simple Lighting Company

I am presuming all I need to do is to wire the transformer to the UK 3 pin plug that has either a 3amp or a 5amp fuse, as I an simply screwing the lights to the top of the cabinets, and then attaching them to the dimmer and then the transformer, and dropping the plug wire through a gap I have next to the cupboards and plugging into the plug socket underneath the cabinets, this means I can simply switch them on as and when I require without the need to run my ugly overhead fluorescent tube! (It is a social housing flat, so can't simply replace this!)

This is the plug I was thinking about: PT133W-MS Masterplug 3 Amp Fused Plug - Robert Dyas -

Thanks in advance for any help you can give me, it is a long time since I had to add a plug, and I want to make sure I buy the correct one!

Cheers

Scuttlebroom