Since you mentioned pounds, I just want to address the power consumption part.
At averaged 100W power usage, the system will use 2.4kWh of electricity every day. In UK the energy prices are absolutely exploding - with the government estimating that the "average" consumer will be paying 28p/kWh of electricity from April. At that price, you are talking £20 a month in JUST ELECTRICITY to keep the system running. That's more than some basic broadband offers in this country on a per month basis.
Yes I know that's not an option for you. But damn, £20 worth of electricity a month just to keep my internet router running? That's crazy.