Matt,
Thanks for the email - will probably give xilo/uno LLU a try in a few month's time. Spoke to one of the sales staff this morning and he was extremely helpful and informative, reckons I may get ~12Mbps down speed on my 34dB attenuation. Only a couple of downsides: will have to buy a router and no free evening & weekend deal on the phone service - call charges look very reasonable though
Certainly don't fancy TT LLU so xilo/uno LLU should be an excellent alternative.
Cheers,
4M2.