Would it not be better swapping the 301 to replace the 57 (every 20 mins using single decks), and perhaps extend the 97 to Hadrian Park as per the 'old' 57/58, allowing the 307 to miss out Hadrian Park? Maybe every 20 mins all through, or every 15 MetroCentre > Newcastle then every 30 to Hadrian Park.

Could even with agreement from Nexus, allow the 350/351 to be kept on Station Road and the extended 97 (or whatever number) covers Wiltshire Drive to differentiate from the 307/309.

Quite an easy win from a regulation POV as most of Hadrian Lodge can walk to Station Road / Coast Road for the other buses if disruption on the western part of the route. Likewise, the 307/309 & 340/341 with comms to passengers would cover Hadrian Park.