As Pete says Coach bolts are ideal, but for that size of machine any 8mm bolts or machine screws of suitable length would be fine, best if you use some washers under the bolt heads to spread the area of contact on those relatively thin flanges and some 'penny' and spring washers under the nuts on the bottom side of the bench.
Thanks everybody for that welcome and thanks Kevin for reccommending the site. I am sure I'm going to have an enjoyable and informative time with you all so thanks again everybody
The info given above is spot on as you would expect :wink: I have bolted my Tyme Avon down to a good sturdy bench this week using coach bolts etc and it's rock solid