Not sure whether it was WBC in those days, but yes, I'd say you were on fixed rate (nominally 1024/256).
I was on the same at the time, at my previous house, and I eventually persuaded my then ISP, Claranet, to change it to 2048/256.
That was the best I could get, due to a significant proportion of the line being aluminium.
The joints were causing shedloads of faults upstream of the ali, so BT eventually provided copper, and Deep Joy! - I then got around 4.5Mbps on ADSL1, and 5Mbps when ADSL2 came along.