how long

[the bean]

Went through mobile camera 2 weeks ago, Still heard nothing have i got away with it this time

[Hooli]

15days from the day of the offence i believe is the limit to recieve the letter.
so go to the postoffice & let your postie's tyres down over night

[streaky]

Are you th RK? If not, then the 14 day rule does not apply to you - Streaky

[the bean]

i am the r/k although it is a works car

[black1]

if your not the r/k how long have they got ?

[EU_Foreigner]

only relevant part is the 14 days (15 including day of offence) to reach the R/K (assuming that the address is correct at the DVLA).

After that, to get to the driver - no limit (well, except that they have 6 months to get it to court).