Yes. For the machines you can use a cheap VSD on.
If you have to get one you have to get one and certainly it is possible to use it on more than one machine(I have done it) but unless the other machine needs a 240V to 415V inverter I wouldnt bother. Even the cheapest 3 phase plug and socket will cost you about $50 and then $30 for each extra plug. Also the VSD you need for your drill is about 1hp(?), your other machines will likely(?) need more. Buying a 3hp one incase you need it will cost you an extra £150(about the price of two of the cheaper 3hp VSDs)
Stuart