Number Ten backed old Lib Dem's links with PC (8,6)

'backed old lib dem's links with pc' is the definition.
I can't tell whether this definition defines the answer.

'number ten' is the wordplay.
I cannot quite understand how this works, but
'number' could be 'l' (L is an example) and 'l' is located in the answer.
an anagram of 'ten' is 'net' which is present in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?