Cool, the missus has given me a pass until about 1:30pm so anytime upto about 11 (I s'pose 11:30 latest) meeting near Maidenhead would suit me fine.
If you ride through Maidenhead centre to join the A404 at Bisham, I can meet you in the Maidenhead Station carpark. Whereas, if you join the A404 at the M4 junction then the best place to meet would be at the Esso garage on the big roundabout as you come into the edge of Maidenhead from Windsor on the A308 (you might need to go 100yrds up the dual carriageway towards M'head then U-turn back to actually get to it from the Windsor road).
Of course, being a fair weather biker nowadays (had my time riding all year round when I was younger
) it all depends on if it's pee-ing down!
Buzz me on 07952 546281 if you want to discuss further.
Adam