where is the best place to get a 12v permanent and ignition supply to fit a flashing led in the dashboard area,the instrument cluster led is useless a bright blue led will do the trick

fuse box under glove box At work
At home

"I can't always believe facts I read on the web" - Charles Dickens

winner by default of the tractor vs caravan race

To serve what purpose  Former Mod/Member, with the most post & Chicken George Arch nemesis

Drain the battery perhaps  ______________________
2011 Full Fat RR 4.4 TDV8
2012 FL2 SD4 Auto HSE
2013 Kawasaki Versys 650

Maybe a dash mounted matchbox police car  Former Mod/Member, with the most post & Chicken George Arch nemesis

Perhaps a friend for the red flashing light  2002 Honda VFR800
2002 Toyota Celica 140 Silver (mid life crisis - again!)
2007 FL2 GS Manual Army Reconnaissance Green + freel2.com sticker
2004 Toyota Celica 140 Black - Gone
2000 Toyota Celica 140 Silver - Gone
1998 Toyota Celica ST Pearl Green - Gone
1996 Nissan Primera 1.6 - Gone
1994 Rover Montego 1.6 Auto - Gone

at night the little red flicker on the dash is useless,i want a mega bright blue flash inside the car to tell possible naughty boys to go and nick another one

Nicking your FL2 is more difficult than you think. It can't be hot wired for example. They either need your key fob or a low loader to nick it. The naughty boys will aslo know if its locked by just looking at the power fold mirrors.
I'd leave well alone if i was you, and keep your key fobs very safe. Another member of the failed FL2 clutch/DMF club, twice.