we have been travelling from our home in durham to norfolk for 40 years and tried every possible route and byway
according to google maps, from our postcode to wayford the A11 to cambridge, A14 to huntingdon then north on the A1 is
12 miles longer but 2 minutes quicker than swaffham, kings lynn newark via the A17, the only downside with the cambridge route
is the road works on the A14 which can be a pain, depending which day you travel and the time you reach the road works
we have tried the A47 via peterbro and found it ok, again depending on time and day