Hi Emma,
I enjoyed reading of your interest in helping husband get involved with a great hobby/sport. :)
"Buzz" gave good advice about the electric motor powered RC helicopter. That would certainly be one way to go. They are relatively smaller, quieter, less messy. (no fuel or oily engine exhaust involved)
Most people though, probably start with a model engine powered helicopter in the size range of .30 - .39 engines. A "Raptor 30" by ThunderTiger or "Hawk 30" by Century would be a couple of excellent choices if available near you for support and readily available spares and advice.
Online shopping sites and walk-in hobby shops will have beginner set-ups containing about everything one would require for inital involvment.
Please keep us, on this side of the Atlantic, informed of you and your husband's new model aviation adventure. Also, any other questions or help needed, feel free to post back here and we will do our best to respond with some usefull advice.
I did some research and found these web sites, all based in UK, that will be helpfull for anyone interested in RC helicopter hobby.
UK based online shopping sites specializing in RC helicopters. Perhaps one will have a store front near enough for a walk-in one day.
http://www.rotorsport.co.uk/main.htmlRotorsport - Martin Briggs Models
http://www.flightbox.co.uk/The Flight Box
http://www.modelhelicopters.co.uk/acatalog/m_index.htmMidland Helicopters
Various UK based RC helicopter sites for informational web surfing.
http://www.flyingsites.co.uk/clubs/index.htmUK RC Club Finder
Perhaps find a flying club near enough to you for a visit to get first hand information and see things in action.
http://www.modelaviatorsassociation.fsnet.co.uk/Model Aviators Association (UK)
The aims and objectives of the MAA are to promote, encourage, and develop all aspects of model aviation. Information, newsletters, pictures, reviews, contacts, and related links.
http://www.fraserker.com/helilessons/RC Helicopter Lessons With Nigel Fraser Ker
Based in Epsom in Surrey, UK. General information, training procedures, and related links.
http://www.rcheliaddict.co.uk/RcHeliAddict.co.uk
UK forum for RC helicopter pilots.
http://www.rotorwash.co.uk/Rotor Wash
RC model helicopter site dedicated to flyers in Scotland.
http://www.birminghamheli.btinternet.co.uk/Birmingham RC Helicopters
Birmingham, United Kingdom - Information, pictures, a newsletter, and help for beginners.
(BMFA) National Organization for all model flying activities.
Most all flying clubs would require membership in this organization before being allowed to join or fly. Mainly for the liability insurance coverage. Of course, if one is flying in own back garden and no near by neighbors, probably not necessary, but check it out anyway.
http://www.bmfa.org/British Model Flying Association
The BMFA is the body delegated by the Royal Aero Club to be responsible for all aspects of model flying in Great Britain. The BMFA normally has around 780 clubs affiliated to it, with a combined membership from clubs and individual members of over 36,000. Membership brings many benefits, including 3rd party liability insurance up of up to £3 million. (Tremendous amount of offical information and resources found here)