On that basis I thought it was worth going for and ordered it from Zilo/UNO. Had it installed yesterday and the engineer said the speed was going to be 10,000Kbs (there was 40 available at the cabinet) which I was well pleased with. It connected overnight and this morning found it was giving 17500Kbs. Don't know how it achieved this speed but hope it does'nt degrade.
They also left a modem with me, EC1 1b. Not using it yet as I got my own router/modem. Is this compatible coming off a Huawei cabinet?
I will have to work out how to connect my old router to the modem in case of failures.
Just thought this might encourage others on a long line though no guarantees.