yes, the Fosse is now super smooth in places
if none damaging is what your after its the place to go. we regularly take our 2a lightweight up there and stop for lunch on the Cotswolds.
There are some more challenging lanes further north near Birdlip.
North Wessex downs is worth a crack, as is the west of Salsbury plain. Bath and NE somerset (BANES) also has a few tight and scratchy endevours. Forest of dean?