most definatly worth it. i got the 8Mb now i am 2.2km away from exchange and i always get full download speed, maxes out at 960kbytes which is perfect. how close are you to the exchange? ive seen bad reviews of the isp people live closer then 1km and they have bad service from ukonlie less them 2MBit i guess the area most demand for the 8Mbit get slower services as to many on it good thing to wait that bit extra and be in a area not in much demand for it
i think cambridge is one of the main city's where ukonline is based so i read on bbc web site