Bird at Dungeness

Apologies in advance that don't have a great camera, and I'm very new to bird watching so this may be an obvious one I need help with!

Had an enjoyable day at RSPB Dungeness recently and looking back at photos I took to retrospectively identify them using a guide book, and there's a few birds I'm having trouble identifying (pic 1 is a 2 for 1!) and hopefully someone much more knowledgable than me can help! They're probably sparrows and I'm overthinking it :-)

Thank you in advance