I have just got this:
https://www.scalemates.com/kits/rye-field-model-rm-5005-tiger-i-gruppe-fehrmann--975900
One review I have read says that the parts supplied can make other versions and there is a website that tells you what can be made from the kit anyone know which website please as there is no link?
If possible I would like to make it without Zimmerit any suggestions on how to do this with the parts supplied please.
I know hardly anything about the differences so please be gentle with me.
It will only be my fourth tank model in over 50 years.

Is this what you are looking for?
http://tiger1.info/models/products-page/RM5005

Thanks for that.
I have ordered the Atak Zimmerit set for it which makes life a lot easier.

Hi Colin,

this should be helpful as well:

http://www.missing-lynx.com/panzer_facts/pftiger.htm

If you already have the Zimmerit set you're probably going to build a Fehrmann Tiger, but with other decals and early tracks you can build pretty much any early Tiger from February to June 1943. The list I linked above tells you which details are appropriate. Feel free to ask if you need more information.

Cheers,
Philipp