Okay so my main priorities are good upload speed and gaming performance. So is BT business my best option? How about Zen? I don't know much about them as an ISP.

Second question is I need to get this set up as soon as possible after I move in so will BT be able to get me up and running quicker than anyone else?

In reply to a post by BobbyD:

Second question is I need to get this set up as soon as possible after I move in so will BT be able to get me up and running quicker than anyone else?

Most decent ISPs can organise a Simultaneous Provide, (SIM), so that both occur on the same day. This process is not 100% reliable but usually works.

For a SIM, the phone line and broadband do not need to be from the same supplier, but if they aren't then both have to be operating the system.

It works by the phone supplier ordering from Openreach and requesting a Linked Order Number (LORN). If you aren't ordering the broadband from them, they should supply you with that LORN. When you order the broadband from the other supplier you give them that LORN and request a SIM. They pass that LORN to BT Wholesale/Openreach along with their broadband order. Openreach should then pick up the link and schedule accordingly.

Obviously if both are provided by the same company, they should be able to handle the LORN internally without you knowing about it.

I believe BT Retail can do SIMs. I don't know about Zen.

Whichever ISP you go with, the changeover and what you get down the copper will be about the same, subject to contention, it is B.T. Openreach that switch things over whoever you go with.
So the bottom line is, you need to find someone that delivers what you want in terms of contract length, throttling of certain services, with customer services reputation possibly being most important, as all services are pretty much alike, but it is how problems are sorted that usually pleases or ruffles a few feathers .
Despite my line and calls being with Zen, I cannot comment personally on their Broadband service as I am with Freeola, but the customer service I get from them as a phone user is very good. Others regard them highly and they have just taken the Which? Broadband award for the 13th year. They don't do throttling. http://www.zen.co.uk/latest-news.aspx?page=11430 and with no tie-in, it is easy to check out and move on if it doesn't suit.

In January I moved (totally different exchange in a different part of the country).

My phone is with BT and broadband with Plusnet. Getting the number out of BT was an issue (because I had two phone lines at the old house), Plusnet were straight forward.

On the day it went perfectly, both working the day I moved in.

In reply to a post by jelv:

In January I moved (totally different exchange in a different part of the country).

My phone is with BT and broadband with Plusnet. Getting the number out of BT was an issue (because I had two phone lines at the old house), Plusnet were straight forward.

On the day it went perfectly, both working the day I moved in.

so can you order phone and BB well in advance of the move in date even though the old tenants will be using that phone line up till the moving day?

I'm not sure about that. The property I moved in to was standing empty.

What I do know is that simultaneous provide has to be ordered at least a week in advance, so I'd suggest you make your mind up who you are going to use and start talking to them as soon as your move date is confirmed.