Will Someone Specify A Soft Starter Please?

Hello!
I thought I understood domestic electrics until I came to specifying a soft start switch for a motor! So reckon it is time to ask an expert..

I have a small woodworking workshop in my garage and treated myself to a large dust extractor which I would like to fit a soft start facility.

The plate on the induction motor has the following:

HP (box is blank, but alongside in another box is 2.25KW)
Hz =50
Volts = 240
Amps = 18
Phase = 1
Class = E

This motor is by far the largest of any on my woodworking machines, so I would like the general electricity supply to the house not to suffer each time I switch this thing on. I have laid a dedicated feed to the dust extractor using 6mmsq cable.

Will someone point me in the direction of a suitable soft starter please? Noting that space is a consideration, and to a certain extent, funds. The 18A on the plate - surely (I hope) this is not continuous running is it??

Thanks in advance
Hal