1995 NHS Pension Retire & Return and salary sacrifice

Bytor123

I am 62 and have a 1995 and 2015 NHS pension. From all the discussions and information I am informed that I can take 100% of my 1995 lump sum and pension under the rule changes starting 1st October, and do a return to work with a 10% reduction in hours, continuing with the 2015 pension. I am advised to submit the papers after 1st October, allow 1 month for the employer to do their stuff and allow 3 months for the NHS systems to accommodate. Thus have a date of 1st February for the Pension.
My understanding is that the 1995 scheme is a final salary scheme (best of the last 3 years?). As I will still be working fulltime (less 10% hours) and I will retain my 2015 scheme, I want to take advantage of the salary sacrifice scheme for a lease car. 
My question is, to avoid any impact on the final salary calculations, should I wait till 1st October to start the process for the car lease, or can I start the application for the car lease now under salary sacrifice which wont really take effect until the car is delivered and payments start (probably October).
I want to minimise any impact on the final salary calculations (or am I over thinking this as the calculation is based on the best of the previous 3 years).

I hope this is clear

Purplelady65

If you are taking delivery of a lease car in October 2023 and claiming your pension from 1st February 2024 then entering a salary sacrifice scheme before you claim your 1985 pension could potentially impact on your pension as the salary will be lower than it would be if you were not in a salary sacrifice scheme. I’m assuming that the best of the last three years will be this current year given the 6% pay rise in this financial year.