Advice please - Cambridge to Oxford

[CBW]

Doing the above next week. Wondering if anyone could suggest some good roads along the way.

Thanks in advance.

[Red Devil]

A603/B1042 to Sandy
A1 south to Biggleswade
B659 to Henlow
A507 to Ampthill
Unclassified to Steppingley and Woburn
Unclassified to Little Brickhill, Great Brickhill, and Soulbury
B4032 to Stewkley and Winslow
Unclassified to Verney Junction, Steeple Claydon and Marsh Gibbon
Thence to A41 and A34 to Oxford

[CBW]

Thank you.