Any knowledge please

The only birds I can think of which have much reliance on conifers are the Capercaillie & Crossbill. The capercaillie uses the needles as a winter food source.  There may be more.

In general birds evolve to use the resources in their environmental niche as there are only three native conifers - Scots Pine Yew and Juniper it is unlikely many in the UK will rely much on conifers. Trees in my garden: One Birds Cherry Two Silver Birch One Whitebeam Three Hollies One Magnolia The neighbours Cypress hedge which forms a boundary Two ornamental Acers