Company Index
- O Jones - Llanidloes
- O & E B Gibbin - Whitland
- O & H Watt - Stranraer
- O & K E Williams - Malpas
- O A S Imports Ltd. - Oldham
- O B Denison - Ipswich
- O C W & A M Morgan - Haverfordwest
- O D Tranter - Usk
- O E Clark & Son - Newark
- O E Morris & Sons - Presteigne
- O G E Chapman & Son - Spalding
- O G Martin - Narberth
- O Gates - Pewsey
- O H Lewis & Son - Llandrindod Wells
- O H Price - Presteigne
- O J Stephens & Co. Ltd. - Caldicot
- O J Jones - Amlwch
- O J Williams - Montgomery
- O K Mugleston & Son - Romford
- O Kane Irish Foods - Wembley
- O M & D M Jones - Newport
- O M Francis & Son - Launceston
- O M Harries - Haverfordwest
- O P Chocolate Ltd. - Merthyr Tydfil
- O Petherick & Son - Bude
- O R & J Vanstone - Okehampton
- O R & W H Parry - Holyhead
- O R Bailey - Chichester
- O T W Chandler & Co - Abergavenny
- O Thomas - Haverfordwest
- O V Garland & Sons Ltd. - Shepton Mallet
- O W Owen - Pwllheli
- O W Wortley & Sons Ltd. - Thetford
- O W & R B Pritchard - Bodorgan
- O W & R J James - Goodwick
- O Wynn J & Rhian M Davies - Fishguard
- O'Hagans Sausages - Chichester
- O'Hara Mushrooms - Enniskillen
- O'Haren Ronnie P - Newport Pagnell
- O'Kane Food Service Ltd. - Lisburn
- Oak Brewing Co. Ltd. - Heywood
- Oak Forest Foods Ltd. - Tipton
- Oak Tree Farm Ltd. - Haverfordwest
- Oakes Bros Ltd - Horsham
- Oakes K C & Sons - Batley
- Oakes Trevor & Susan - Birmingham
- Oakey D J & Son - Banbury
- Oakfield Farm - Ascot
- Oakfords Ltd. - Kidderminster
- Oakland Farms Ltd. - York
- Oaklea Nurseries Ltd. - York
- Oakleaf European Ltd. - Bournemouth
- Oakleigh Nursery - Harlow
- Oakley Green Nurseries Ltd. - Bristol
- Oakley M V B - Rye
- Oakley Nursery - Wisbech
- Oakwell Brand - Liverpool
- Oakwood Nursery - Waltham Abbey
- Oasis Aquarium - Salford
- Oasis Foods Ltd. - High Wycombe
- Oasis Wholefoods - Rickmansworth
- Oasthouse Engineering Ltd. - Sheffield
- Oates R F H & Son - Newark
- Occasion Cakes - Bristol
- Occasions Cake Studio - Grays
- Ocean Bounty Ltd. - Grimsby
- Ocean Meat and Trading Co - Southampton
- Ocme UK Ltd - Newbury
- OCS Group UK Ltd - Manchester
- Octagon Products - Daventry
- Octopus Collation Solutions Ltd. - Derby
- Odds Farm Park - High Wycombe
- Oddy B & B C - Coventry
- Odlin & Graves - Louth
- Oerlemans Foods UK Ltd - Grimsby
- Off Zero Ltd - Cullompton
- Ogden F & Son - Keighley
- Oggys Novelty Cakes - Lichfield
- Ogle A N - York
- Ogmore Vale Bakery Ltd. - Bridgend
- Ogwyn Evans - Carmarthen
- Ok Food Products - Birmingham
- Okell & Son Ltd - Douglas
- Okemoor Quality Foods - Okehampton
- Old Barn Farm Ltd. - Edenbridge
- Old Barn Nursery - Carmarthen
- Old Bushmills Distillery Co. Ltd. - Bushmills
- Old C E - Wadebridge
- Old Fashioned Foods (U K) Ltd. - London
- Old Ford Ltd. - London
- Old Hall Farm - Lowestoft
- Old Mill Farm - Haywards Heath
- Old Park Cutters - Bristol
- Old Park Foods Ltd. - Craigavon
- Old Town Farm - Newcastle
- Olden H G M - Romsey
- Oldershaw Brewery - Grantham
- Oldfield E & E & Son - Wellingborough
- Oldfields Ltd. - London
- Oldham J K - Leicester
- Oldham J S - Southport
- Olds P R & E J & Son - Falmouth
- Olds W R E M & W L - Camborne
- Oliver (Farms) Ltd. - Sudbury
- Oliver Adams Ltd - Rugby
- Oliver Bros - Buxton
- Oliver Bros (Fish Merchants) Ltd. - Grimsby
- Oliver Cooper - Ipswich
- Oliver Harry A - Newark
- Oliver I & Partners - Harrogate
- Oliver Priestley - Downpatrick
- Oliver R G & Son - Royston
- Oliver T A - Morpeth
- Olives Et Al Ltd. - Sturminster Newton
- Ollerton Fred A & Sons - Wigan
- Ollier C & J - Middlewich
- Olney J & W A - Bedford
- Olson Quality Foods - London
- Olsten Trout Ltd. - Louth
- Olus Environmental Ltd - Henfield
- Olver T R - Truro
- Olympia Food Products - Plymouth
- Olympic Conveyor Services Ltd - St Austell
- Omega Efa Ltd. - Carnforth
- Omfarm Ltd. - Driffield
- Omnitrack (Ball Transfer Units) Ltd - Stroud
- Omonia Continental Patisserie - London
- Omron Electronics Ltd - Milton Keynes
- Oneida Viviers Ltd. - Milford Haven
- Onions D M & C L - Nottingham
- Onions P J - Newark
- Onix (Marketing) Ltd. - Bourne
- Online Bottlers Ltd. - Middlesbrough
- Online Packaging Ltd. - Gloucester
- Only Natural - St Helens
- Only Pets & Horses - Llandysul
- Onward Fishing Co. Ltd. - Aberdeen
- Onyett Farms Ltd. - Huntingdon
- Operational Support Ltd - Chesterfield
- Opie A T & Y J - Liskeard
- OPM Group - Keighley
- Opra Packaging Ltd. - Walsall
- Opsol UK Ltd - Cramlington
- Optima Health Ltd. - Cardiff
- Options Employment Ltd - Hounslow
- Oram Kevin J - Beccles
- Oram W D - Norwich
- Orangeburst Ltd. - Brighton
- Orbital Foods Ltd. - Bury St Edmunds
- Orbiter Food Machinery Ltd. - Nottingham
- Orchard County Chemicals - Armagh
- Orchard Fruit Wine - Wetherby
- Orchard Hill Machinery - Andover
- Orchard House Foods Ltd. - Corby
- Orchard Ian P C - Dunstable
- Orchard Nurseries (Terrington) Ltd. - Wisbech
- Orchardlea Foods - Exeter
- Orde M W - Morpeth
- Ordens Farms Ltd - Banff
- Orexis - London
- Organic Herb Trading Co - Taunton
- Organic Resource Management Ltd. - London
- Oriella Ltd - London
- Oriental Delight - Wembley
- Oriental Spices - Grimsby
- Original Landscape Design Nurseries - Colchester
- Orion Confectionery (International) Ltd. - Horley
- Orion Farming Group Ltd - Abingdon
- Orkney Herring Co Ltd - Orkney
- Orkney Marine Hatcheries Ltd. - Orkney
- Orme-Smith Partnership - Oakham
- Ormond Farm Partnership - Swindon
- Ormrod J D V - Thatcham
- Ornamental Plants Ltd. - Preston
- Orr Bros - Londonderry
- Orr John S - Downpatrick
- Orr L & D - Bathgate
- Orton Farmers Ltd. - Penrith
- Orton Wholesale Bakeries - Leeds
- Osborn J & W - Workington
- Osborne Norman A - Lincoln
- Osborne P F & J - Westbury
- Osbourne John Chapman - St Neots
- Oscar Mayer Ltd. - Chard
- Oscura Ltd. - Reading
- Osmin Olives - Craven Arms
- Osmond W J - Dorchester
- Osmonds Int Ltd. - Whitchurch
- Osprey Foods International Ltd. - Holt
- Ostlers Farm Products - Braintree
- Oswald H M Loxton - Taunton
- Oswestry & District Agricultural Society - Oswestry
- Othniel Shell Fish Farms - London
- Otley Cattle Market Auction Ltd - Otley
- Otter Vale Products - Budleigh Salterton
- Otterburn Timothy A - York
- Ottery Wholefoods - Ottery St Mary
- Ottley Controls Ltd - Kettering
- Oultram T R J M & Son - Frodsham
- Ouse Bridge Farms Ltd - Downham Market
- Ovenell R J - Torrington
- Ovenells - London
- Ovens J R & M J - Beaworthy
- Over Rankeilour Farm - Cupar
- Overseal Natural Ingredients Ltd. - Swadlincote
- Overton H A & Son - Great Yarmouth
- Overy Nigel P - Tarporley
- Owen A E & E M & Sons - Denbigh
- Owen Thomas & Son - Widnes
- Owen & Sons Whittaker - Knutsford
- Owen & Yabsley Ltd. - Tiverton
- Owen Bros - Newtown
- Owen Bryn - Llanrwst
- Owen C J - Richmond
- Owen Farms (Westbury) Ltd. - Brackley
- Owen G J - Fishguard
- Owen Haughian - Newry
- Owen Humphreys - Aberystwyth
- Owen Les Dairy Supplies - Welshpool
- Owen M J & A - Ashford
- Owen P Watts - Caerphilly
- Owen R A & Son - Liverpool
- Owen S Davies - Boncath
- Owen William J - Llanrwst
- Owens - Bromsgrove
- Owens E J & Co. - Brecon
- Owens A G & D - Llanelli
- Owens G & D M - Brecon
- Owens Nutrition Ltd. - Northallerton
- Owens W J H & D L - Llandysul
- Owl House Fruit Farm - Tunbridge Wells
- Oxford Agricultural Trials Ltd - Bicester
- Oxford Analytical Ltd. - Bicester
- Oxford Nutrition Ltd. - Witney
- Oxford Wholefoods Ltd. - Oxford
- Oxton Farms Trust - Southwell
- Oyston Frank R - Royston
- Ozdiller Ltd. - London
