7 September 2012 Last updated at 10:17 ET

Bafta Cymru: Rhod Gilbert and Code Breakers among nominations

Award experience - Rhod Gilbert has been nominated in the best presenter category

A documentary about World War II code breakers and a TV series following teachers are among the leading nominations for Bafta Cymru awards.

S4C's Gwaith/Cartref has six nominations, while BBC Wales' Code Breakers: Bletchley Park's Lost Heroes has five.

The film Patagonia, the BBC's Doctor Who and Passion in Port Talbot are also shortlisted.

Comedian Rhod Gilbert is nominated for Rhod Gilbert's Work Experience.

The Bafta Cymru awards, in their 21st year, honour excellence in broadcasting, interactive and film in Wales.

The winners will be announced at a ceremony hosted by The One Show's Alex Jones at the Wales Millennium Centre in Cardiff on 30 September.

Nominations for best actor include Mark Lewis Jones for Baker Boys, the BBC drama series about the struggles to keep a bakery in the south Wales valleys going; Richard Harrington for Burton: Y Gyfrinach and Craig Roberts for his role in the film Submarine.

Best actress nominees include Eve Myles, also for Baker Boys, Rhian Morgan for Gwaith/Cartref and Sharon Morgan for the film Resistance.

In total, BBC Cymru Wales has been recognised with 40 nominations for programmes including Human Planet, BBC Cardiff Singer of the World, Rhod Gilbert's Work Experience, The Sarah Jane Adventures and Being Human.

Taro Naw and Week In Week Out: Cash for Qualifications are nominated in the best current affairs programme category, while BBC Wales also has three nominations in the best news coverage category - for BBC Wales Today, Election 2012 and Newyddion 9/11.

Comedian and presenter Rhod Gilbert (Rhod Gilbert's Work Experience) is up against Huw Edwards, for Fire in the West - The Llanelli Riots of 1911 and Lowri Morgan for S4C's Ras yn Erbyn Amser, in the best presenter category.

Mark Lewis Jones and Eve Myles, both nominated for their roles in Baker Boys

Passion in Port Talbot, which followed Hollywood actor Michael Sheen as he staged a 72 hour Passion production in his hometown, is nominated in categories including best single documentary and best factual director for Rupert Edwards.

Three programmes have been nominated for the highly-respected Gwyn Alf Williams Award, given to the documentary that contributes most to the understanding of Welsh history. They are BBC Cymru Wales' Lions '71, ITV Wales' Fishlock's Wales, and S4C's Wyneb Glyndwr.

'Passion and excellence'

Rhodri Talfan Davies, director of BBC Cymru Wales, said the range of the nominations demonstrated the "passion and excellence" of the corporation's production teams, both in-house and across the independent sector.

"It is thrilling to see the BBC making a mark in English and Welsh, and in its output for both Wales and UK audiences," he added.

Allison Dowzell, interim director of Bafta in Wales, said: "This is a landmark year for Bafta Cymru and we have some exciting plans and a few surprises up our sleeve for this year's special event.

"What better way to celebrate our 21st birthday other than to recognise all the time, energy, determination and hard work that goes into making and producing creative media, TV and film programmes in Wales."