Camera cleaning service - any recommendations

I've been living with a fair amount of dust spots in the viewfinder for some time, but now more distracting objects have appeared.

I've tried removing them myself, by removing the screen and blowing air via the rocket blower, but this hasn't worked. Therefore I conclude that professional help is required.

Has anybody any advice on who to use, costs etc?
Unfortunately in my part of the world camera shops are a rarity

Thanks
Adrian

Cambrian Photography in Colwyn Bay have a good reputation, might be near enough for you. Think they used to be Pentax Pro dealers as well though not sure if they still are?

Thanks Lee.
I took my then K100D Super there a few years ago, for a sensor clean.
I had to leave it with them overnight, therefore double the travelling on top of the £35 charge for the work.

When I got it back a hair suddenly appeared in the viewfinder, whch I managed to blow away. As to the sensor, hardly any better than it was before.

Regards
Adrian

Get yourself an Arctic butterfly for dust bunnies on your sensor, you simply charge the nylon bristles by spinning them and then hold it close to the sensor and the particles jump off.
If that doesn't work you will need to do a wet clean with sensor swabs, simple, but don't use undue pressure.
Lastly there may be some dust behind the focussing screen which resides in the top of the void revealed when removing your lenses. This is a BE CAREFUL job. Never touch it with your fingers use a pair of fine tweezers on the tiny tab, there is a small catch that holds the tray up and once released the focussing screen drops down in the tray. There are videos on youtube that will help.

Thanks SteveEveritt, my sensor seems fine (I personally use the Pentax O-ICK1 stick). However I cannot remove the particles plus a few other small fragments from the viewfinder.

I fully understand the perils of removing the screen, in that I actually damaged my original one whilst doing exactly this
I've since replaced it, but I'm still nervous about removing the screen (even with the supplied tweesers).

I have no idea where these are located, in that I've applied the blower with the screen removed, with no effect.

I've now received quotes of £48 and £65 (Johnstons and Asahi Photo Ltd) respectively.