Ok, a little maths has given me perspective.....
Initially, I wanted the Sonos 5.1 in the living room, play 1 in two other rooms, and a play 3 in my bedroom.
That little lot comes in at £1966 from John Lewis....
However, based on my limited research, and largely on advice received here I think I'm going for.....
Denon AVRX 2200W and Monitor Audio MASS 5.1 bundle plus a Sonos connect, a play 3 in each of the other two rooms and a Playbar in my bedroom.
This comes to £2086.
Turns out I get so much more functionality from the amp over Sonos 5.1, full Sonos functionality around the house, and effectively upgraded Sonos speakers to my original plans.
The only thing I concede is trunking, which on researching can be pretty subtle and I have the ideal skirting for it too....
Anyone know if the Richer Sounds Denon amp and Monitor Audio speaker bundle will be around another month?