Please contact the UK reseller from whom you ordered your SketchUp Pro licence for direct assistance . They will be able to support you with any installation and technical questions.
Unsure of who your reseller is? Email firstname.lastname@example.org and we can point you in the right direction or assist directly.
You may want to take a look at our FAQs which you will find here.
Alternatively, take a look at the SketchUp Forum and introduce yourself to the community there.