I can't get an idea for the first one but the second looks like a female Eristalis tenax, but that is a guess; I don't even qualify as a novice when it comes to identifying insects.
Pretty good guess as I'm sure you're right.
The hoverfly above is an easy one once you know it. It's Episyrphus balteatus, often called a Marmalade Fly-the double dark bands are diagnostic. It can vary in colour intensity + can be quite dark in cool temperatures. Also a known migrant so in some years can be very abundant, but seems a while since we had a bumper year.
Thanks both. Grateful for the ID. I do find it fascinating that small insects can migrate. Remember seeing a programme on migration, that insects including spiders went up to high altitude to be swept by the wind and come down to lower level when they get to where they want to be.