I might just pony up for an SFI check how much are they these days (assuming my line was fault free)
BE organised an SFI for me last year, but there was no charge as the fault was found on the BT Openreach side of the network. I believe the cost is around £250 but BE don't call out an SFI until they've done a _lot_ of tests. I've not read of anyone on BE being charged yet (as the tests show faults).
James - be* pro - on THFB - sync about 17.2mbps - BQM