I googled 'office declutter' and came up with a girl in South London. She happily came out to us on Surrey/hants border. Initial assessment was free then £200 per day. She worked very quickly and efficiently, stopping only briefly for lunch. Very professional attitude and service - well worth the money IMO.
Is that the Round File (which has now been replaced by the shredder)?
I wanted a stationery spike until I realised I'd need an series of them and that would increase my risk of falling on top of one and dying!!! One for household receipts; one for my expenses; one for DH's, etc. It gets too complicated.