Thank you all for the feedback re: essential purchases; the Mothercare list in particular was very useful. I have a lot still to learn about BF, I've realised.
Thought you might be interested to see my updated and vastly increased list of things which now reads:
Out and about
Pram/pushchair (suitable from birth)
Car seat
Sling
Seat for hands free time
Sleeping
Clip on bednest style crib
Mattress
Waterproof mattress cover
Sheets x4
3x blankets
Bottom/bathing/health matters
Reusable nappies & associated stuff
Bum cream & wipes
Changing mat
Nappy bin (or repurpose lidded bin)
Baby thermometer
Breastfeeding
2x nursing bras
Breast pads
Lansinoh nipple cream
Nipple pads
2x warm nursing nightwear
40x small muslins
3x big muslins
Clothes
Babygros/sleepsuits x12
Long sleeved vests x12
Snowsuit
Hat x2
Playing
Playmat
Playpen
Toys & books
Lady parts
Tea tree oil
Maternity pads