that sounds good, Is there anyway I can blag the engineer to give me more than 300mbps or is it not technically possible?
Nope. The Openreach product BT Consumer will order is 330/30 sync.
Anyway,

. I wonder if you've really thought about this? I see:-
I've been used to 5mb/s a sec since 2004, so I will definitely be going for the 300mb product, definitely want to make most of it
I deserve it
How many people are going to use this FTTP, and at what times of day?
100Mbps is huge, 300Mbps far more than most households could possibly use after they have downloaded three-years-worth of films. If they have space to store them.
Unless you have extraordinarily high requirements, you will not
"make the most of it", as you simply won't be able to use anything like all of it

.
I accept that if you and your partner and (say) five kids are going to be streaming and gaming 20 hours a day I could be mistaken, but coming from 5Mbps surely it would take a while to develop a complete lifestyle from what you have now to that?
Oh - and!!!
The guaranteed speed at peak times is something under 80Mbps throughput.
My broadband basic info/help site -
www.robertos.me.uk. Domains, site and mail hosting -
Tsohost.
Connection - AAISP Home::1 80/20. 200GB. Sync 74496/13801Kbps @ 600m. BQMs -
IPv4 &
IPv6