Thank you all for your replies

Well known company Wembley windows

Fensa registered

10 yr warranty

Dispose of all old windows/doors

20% deposit

£6400 inc vat

3 front windows (big)

Side stair window

Bathroom window

Rear bedroom window (big)

Rear door

French door and 2 windows

All with trickle vents

Insurance approved locks

Seemed like a good quote

Will get another quote to compare the guy that turned up seemed okay, very non pushy.

Once again thank you