Is SVO considered to be in Europe in terms of OWE?

I'm looking on how to maximise the mileage on an OWE in Europe and have this:

LHR-DXB-LHR-ATH-LHR-SVO-LHR.

In case I do this, but actually origniate from e.g. Denmark, can I buy a seperate ticket for CPH-LHR-CPH so that I don't burn segments on that short hop?

SVO is in Europe for OWE calcs. However, you can only have one trip from London to far off European destinations, and DXB and SVO are both in the list that are restricted. So your OWE can include either LHR-DXB-LHR or LHR-SVO-LHR, but not both.

Yes you can purchase a CPH-LHR-CPH far to fit around your OWE.

it is probably cheaper to start at CPH than LHR.
you may also consider ex-ARN OWE.

not also that you are only allowed two stopover (defined ad 24 hours) in the continent of origin.

This trip has lots of problems.

1. You have three destinations that have limited access from the UK. You can go to only one of these: DXB, ATH, SVO for free from the UK as part of a OWE.

2. If you are originating in Europe you cannot buy the two extra segments you need to do six segments in your continent of origin.

3. If you originate in CPH to get a lower fare you cannot buy a ticket outside of your OWE to go to LHR. You must originate on your OWE ticket in CPH and terminate the trip in CPH, also.

4. The suggestion about originating in HEL is a good one as the restrictions to DXB, SVO and ATH are all from the UK, not elsewhere. However, you will still be limited to four segments in Europe if you originate there.

In general, the two best available distance runs from LHR are to DXB and IST.

That list of destinations restricts you to 2 out of the 4 free segments. If you have 6 segments and are buying 2 of them you could have 4 segments to the restricted areas. But you have 2 problems: all 6 of your segments are on the restricted list, and you can't buy additional segments in the continent of origin at all.