Tree Advice - Beech Wounds

[CABennett]

Viewed a job today where the client wanted work doing on three beech to let more light through and reduce leaf fall. I suggested it might be better to take out the middle beech of the three rather than make big pruning cuts on them all. Then I saw that one of the outside beech had what look like old pruning wounds around the main stem. What are the long term health prospects for this wounded beech? 

[CABennett]

the base wound probably not from pruning though. 

[pie eater pete]

Wound wood is showing good vitality in all those pics..I'd leave alone unless there are any other visible problems