welcome to partyvibe charliefarley!
I only moved to Suffolk this time last year and unfortunately it seems that the underground rave scene in the county has been decimated – IMO it was a victim of its own success, all the nice areas got caned, it pissed off the locals so they got the cops to crack down.
there are legal underground events in Ipswich, Bury St Edmunds and Lowestoft which are run by ravers and might be worth a try…
which bit of Suffolk are you in? (its a huge county compared to many other places in England)
if you have transport (and can afford the fuel costs) there are raves in Norfolk and SE England within reach as well…