So confused!!!

My mileage is at 45k at the moment. The car has had 3 services so far, one at 13k, another at 22k and the third at 30k. I bought the car after the third service at 30k.

The first two services were at Dovercourt Ford - the original dealer. The dealer I bought the car from serviced it at another place so the 3rd year service is not a Ford service.

Just before the winter at 39k, I changed the oil, oil filter, and spark plugs.

What service is due now?! The 4th year service is due at 50k, should I wait until then and go back to Ford? By my dealer servicing the car elsewhere do I lose the paint warranty or can I get the paint inspection done anyway? Is it worth me getting it serviced at Ford or continue to do it myself or a local garage? I'm intending to keep the car long term, probably until it rusts away! lol

Thanks for the help in advance.

Cheers
Nick