How to value my car please?

2007 HSE I6 Auto

FSH

12 months MOT

Santorini black

Owned last 12 years.

Your car may be getting a bit old for reliable internet valuations, but try sites like Auto

Autotrader

https://www.autotrader.co.uk/cars/valuation

or We Buy Any Car

https://www.webuyanycar.com/car-valuation/ FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 77k+ miles) (MY2015)
Metro in its 11th Year of (Extended) LR Warranty / Full LR Service History
(Expensive, but Trouble/Worry free - hopefully?)

Look at adds for FL2s similar to yours and get an idea what asking prices are? both from dealers and private sellers, dont forget dealers buy cheap sell dear. 2013 FL2 XS.
Defender 90 300 TDi.
Defender 90 300 TDi CSW.
1964 MGB Roadster.
1944 Willys MB "Jeep" with bullet holes. (gone)
17 hand Irish Drought Thoroughbred (mostly lame)
Nagging Old Boiler.

Mahatma Gandhi said if there is an Idiot in power those who elected him are well represented

Sorry to be a pain ....... But is this really a post for help, or a actual advert?
As suggested above, many ways to get " a value ", but at the end of the day, the market dictates .......
As advised look at sold items on popular auction sites, or WBAC.
Good luck