Could Arriva not do this as an order to solve the lack of double deckers (NOT INCLUDING EX LONDON GEMINI'S):

New orders:
- 15x Sapphire ADL E400MMC to Ashington for services X21 / X22.
- 5x Sapphire ADL E400MMC to Darlington for service 7.
- 6x Scania ADL E400MMC to Ashington for service X18.

Cascades for services X21 / X22:
- 2x 57 plate Sapphire E400 as spares for services X21 / X22.

Cascades for services X10 / X11:
- 7x 14 plate Sapphire E400 and 5x 15 plate Sapphire E400 for services X10 / X11.
- 1x 57 plate Sapphire E400 as spare for services X10 / X11.

Cascades for service 7:
- 1x 09 plate Sapphire E400 as spare for service 7.

Cascades for services 35/35a:
- 6x 57 plate E400 refurbished to MAX spec (headrests re-trimmed, NSA's removed and power sockets covered up) for services 35/35a.

Cascades for services X7/X8:
- 9x 61 plate DB300 in MAX spec for services X7/X8.
- 1x 61 plate DB300 in MAX spec as spare for services X7/X8/X9.

Cascades for service X9:
- 4x 59 plate DB300 in MAX spec for service X9.

Cascades for service 308:
- 1x 59 plate DB300 in EcoGreen as spare for service 308. The PVR of this service could be increased to 10 vehicles with extra time to improve reliability as a result.

Cascades for service X12:
- 9x 59 plate DB300 in MAX spec for service X12.
- 1x 59 plate DB300 in MAX spec as spare for service X12.

Cacades for service X14:
- 3x 57 plate E400 in MAX spec for service X14.

Cascades for service X15:
- 5x 64 plate E400 in MAX spec for service X15.

Cascades for service X20:
- 4x 09 plate E400 in MAX spec for service X20.

Cascades for Ashington:
- 2x 05 plate Volvo B7TL ALX400 transfer to Ashington and retrofitted with free Wi-Fi.
- 2x 61 plate DB300 in MAX spec as Ashington spares for any MAX service excluding the 35/35a.

Summer X93 extras:
- 3x Scania ADL E400MMC transfer to Redcar / Whitby for service X93 operating alongside Volvo B9TL Gemini 2 7401 to 7406.
- 3x 64 plate MAX Spec E400 operate on service X18 alongside the other 3x Scania ADL E400MMC.
- 2x 64 plate MAX Spec E400 operate on service X15 alongside 3x 09 plate MAX Spec E400.
- 3x 57 plate MAX Spec E400 operate on service X20 alongside 1x 09 plate MAX Spec E400.
- X14 unchanged.
- 35/35a operated by 3x 57 plate MAX Spec E400 alongside 2x Volvo ALX400 and 1x 59 plate MAX Spec DB300.

Note that 1x MAX Spec E400MMC would be available as a spare in the winter. Ashington would still have 1x MAX spare and if DESPERATE, could use the Sapphire spares if not needed on the X21 / X22.