Some are our favorites, some deadly poisonous. Please refer to a standard mushroom guidebook before eating any wild funghi! You must be familiar with poisonous funghi and how to identify them!
The Woodland Trust have a good but incomplete article (missing eg boletus satanoides) here
Toxic Funghi
The classic book is 'Mushrooms and other fungi of great Britain and Europe' by Roger Phillips
Publ:Macmillan ISBN: 0 330 26441 9. Rogers Mushrooms is now available again on Amazon.

Lastly I do not accept any responsibility for the incorrect identification of any funghi and the results of their ingestion which may be fatal. If in doubt dont even pick them!