Lloyd was born in Maesteg, Bridgend, Wales, the daughter of two teachers. She attended Ystalyfera Bilingual School and performed at the Eisteddfod where she won the Crown. She then graduated with first class honours from University College, Cardiff (now Cardiff University). Lloyd then attended Jesus College, Oxford where she started work for a post-graduate B.Litt. degree in Celtic Studies, but she left after one year without graduating. She has meteorology qualifications from the Met Office College, a distinction, and frequently appears in TV documentaries about the weather.
Lloyd started her media career as a researcher for BBC Wales Today nightly news programme, having responded to an advert in the media pages of The Guardian. She then became an announcer for S4C. During a themed premiere for the film The Avengers she dressed in a skin-tight black catsuit, for which she won the prize for best costume.
Whilst working for Worldwide Television News in London, she was asked to work with the Met Office on documentaries on the weather. She then screen tested for the ITV Weather and beat two hundred people to the job. Lloyd also won the Television and Radio Industries Club (TRIC) award for the best TV weather presenter in 2005 and 2007.
Proud of being Welsh, she set up SWS (meaning “kiss”, and standing for “Social, Welsh and Sexy”), a Welsh networking club, in partnership with entertainer Stifyn Parri in the Groucho Club. Bryn Terfel and Siân Phillips are now patrons.
In 2007, Lloyd won the “UK Rear of the Year” competition making her the oldest woman to win the title. She also starred as the ‘hidden’ celebrity in an episode of the CBBC show Hider in the House. Lloyd also helped support Sense-National Deafblind and Rubella Association, and in 2007 attended the launch of the Fill in the Gaps campaign.
In March 2008, Lloyd published an autobiography, entitled A Funny Kind of Love.
In Spring 2010, Lloyd presented the first series of Wedding TV’s The Great Cake Bake.
Lloyd appeared in ITV’s reality television show I’m a Celebrity… Get Me out of Here!, but was the shock first celebrity to be eliminated by the public vote. Siân took part in a celebrity version of TV show Total Wipeout which aired on 18 September 2010.
While at Cardiff University, she met Mark Cavendish, a relative of the Duke and Duchess of Devonshire and now a businessman. They were together for 14 years, often visiting the family seat at Chatsworth House.
From 2002 Lloyd was in a relationship with Lembit Öpik, the MP for Montgomeryshire, and engaged to him from 2004 to October 2006. The couple lived at a house they bought together in Opik’s constituency outside Newtown, Powys, and were due to marry in 2006. They met at a Liberal Democrats conference session where the Press meet the MPs, where they talked and she lost a ring. He found it, then lost it himself, then found it again two years later and called her – she had a spare ticket to go to The Proms, and they started a relationship. She appeared on Celebrity Who Wants to Be a Millionaire? with Öpik on 15 April 2006, winning £64,000 for charity.
In December 2006 it was revealed that the relationship had broken down. Lembit subsequently became romantically involved with 24-year-old Gabriela Irimia of the Cheeky Girls pop duo.
After meeting motor racing entrepreneur Jonathan Ashman at Secretary of State for Wales Peter Hain’s 2007 St David’s Day party at Westminster Palace, Ashman proposed to Lloyd in December 2007 on a holiday at the foot of Mount Kilimanjaro in Tanzania. Lloyd and Ashman married on 30 December 2007 at Portmeirion Hotel in Gwynedd.
Cardiff Broadcasting Company (1980-2)
BBC Wales Today, researcher (1982-4)
Development Board for Rural Wales, press officer (1984-6)
S4C, continuity announcer (1986–88)
Worldwide TV News (1988–90)
ITV Weather presenter (1990-)
How 2 presenter (1997)
The Apprentice UK (Brief Appearance, in an ads campaign; 2008)
Churchill Car Insurance as the lady feeding the dog sausages.