The servicing on my car has always been done at the 15k intervals until the last one which was done at a 12 month interval due to much lower mileage, so I had a 45k service and at 12 months later it had another with the mileage at 51k in December, I am now coming up to 63k so should I be servicing at 64k and which service will it be ie A or B, hope this makes sense.

Services are 15k or 12 month intervals whichever comes first

In the event like me your service are out of sync you should be guided by service number ie, 3, 4 or 5 etc  Wanted a Series 2 LR since childhood but previously owned MY16 Disco Sport HSE TD4 Auto, MY13 RR Sport Black Edition TDV6 Auto, MY10 RR Sport HSE TDV6 Auto, 2007 Freelander 1 Freestyle TD4 Soft Top, 2009 Freelander 2 GS TD4 Auto, 2007 Freelander 2 GS TD4, 2004 Disco 2 Metropolis Auto, 2002 Disco 2 GS, 2000 Freelander 1 SE TD4 SW

Still hoping for a S2 one day!

How old is it? 2005's are due the Cambelt this year - 7 years or 105k  Range Rover Sport HSE DYnamic SDV6 Velocity blue 2020 MY
Range Rover sport HSE Dynamic P400e Silver
Range Rover Sport 3.0 SDV6 HSE Dynamic 2016 MY
Range Rover sport 3.6tdv8HSE 2007 Gone
Range Rover sport 2.7tdv6SE 2005 Gone
Range Rover sport 2.7tdv6SE 2007 honey
Range rover Vogue 2005 4.4 - GONE and missed
BMW 535d M sport 2006 - GONE not as missed
BMW X5 4.4 2004 sport - GONE