Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Celia Bannerman
Table title:
Filmography
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Film </th><th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 1965 </td><td colspan=1 rowspan=1 > Object Z </td><td colspan=1 rowspan=1 > Diana Winters </td><td colspan=1 rowspan=1 > TV series (6 episodes) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 1967 </td><td colspan=1 rowspan=1 > Blandings Castle </td><td colspan=1 rowspan=1 > Jane </td><td colspan=1 rowspan=1 > TV series (1 episode: "Lord Emsworth and the Crime Wave at Blandings") </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Pride and Prejudice </td><td class="highlighted"  colspan=1 rowspan=1 > Elizabeth Bennet </td><td class="highlighted"  colspan=1 rowspan=1 > TV series (6 episodes) </td></tr>
<tr> <td colspan=1 rowspan=1 > 1968 </td><td colspan=1 rowspan=1 > Thirty-Minute Theatre </td><td colspan=1 rowspan=1 > The Actress </td><td colspan=1 rowspan=1 > TV series (1 episode: "The Bishop and The Actress") </td></tr>
<tr> <td colspan=1 rowspan=2 > 1969 </td><td colspan=1 rowspan=1 > W. Somerset Maugham </td><td colspan=1 rowspan=1 > Iris Maitland </td><td colspan=1 rowspan=1 > TV series (1 episode: "Louise") </td></tr>
<tr> <td colspan=1 rowspan=1 > Albert! </td><td colspan=1 rowspan=1 > Lucy </td><td colspan=1 rowspan=1 > TV series (1 episode: "The Good Samaritan") </td></tr>
<tr> <td colspan=1 rowspan=1 > 1970 </td><td colspan=1 rowspan=1 > Vile Bodies </td><td colspan=1 rowspan=1 > Nina Blount </td><td colspan=1 rowspan=1 > TV movie </td></tr>
<tr> <td colspan=1 rowspan=2 > 1971 </td><td colspan=1 rowspan=1 > ITV Sunday Night Theatre </td><td colspan=1 rowspan=1 > Sue Quarry </td><td colspan=1 rowspan=1 > TV series (1 episode: "Tales of Piccadilly: The Way Out") </td></tr>
<tr> <td colspan=1 rowspan=1 > Crime of Passion </td><td colspan=1 rowspan=1 > Agathe Bernois </td><td colspan=1 rowspan=1 > TV series (1 episode: "Justine") </td></tr>
<tr> <td colspan=1 rowspan=1 > 1972 </td><td colspan=1 rowspan=1 > Armchair Theatre </td><td colspan=1 rowspan=1 > Miss Arrowroot </td><td colspan=1 rowspan=1 > TV series (1 episode: "The Folk Singer") </td></tr>
<tr> <td colspan=1 rowspan=2 > 1973 </td><td colspan=1 rowspan=1 > The Rivals of Sherlock Holmes </td><td colspan=1 rowspan=1 > Milly Revell </td><td colspan=1 rowspan=1 > TV series (1 episode: "The Missing Q.C.s") </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Upstairs, Downstairs </td><td class="highlighted"  colspan=1 rowspan=1 > Diana Newbury/Lady Diana Russell </td><td colspan=1 rowspan=1 > TV series (4 episodes: 1973–1975) </td></tr>
<tr> <td colspan=1 rowspan=3 > 1974 </td><td colspan=1 rowspan=1 > BBC Play of the Month </td><td class="highlighted"  colspan=1 rowspan=1 > Cecily Cardew </td><td class="highlighted"  colspan=1 rowspan=1 > TV series (1 episode: "The Importance of Being Earnest") </td></tr>
<tr> <td colspan=1 rowspan=1 > The Tamarind Seed </td><td colspan=1 rowspan=1 > Rachel Paterson </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Affairs of the Heart </td><td colspan=1 rowspan=1 > Cora Prodmore </td><td colspan=1 rowspan=1 > TV series (1 episode: "Grace") </td></tr>
<tr> <td colspan=1 rowspan=2 > 1975 </td><td colspan=1 rowspan=1 > Ten From the Twenties </td><td colspan=1 rowspan=1 > Grace Peddley </td><td colspan=1 rowspan=1 > TV series (1 episode: "Two or Three Graces") </td></tr>
<tr> <td colspan=1 rowspan=1 > Shades of Greene </td><td colspan=1 rowspan=1 > The Girl </td><td colspan=1 rowspan=1 > TV series (1 episode: "The Invisible Japanese Gentleman") </td></tr>
<tr> <td colspan=1 rowspan=1 > 1976 </td><td colspan=1 rowspan=1 > Wings </td><td colspan=1 rowspan=1 > Kate </td><td colspan=1 rowspan=1 > TV movie </td></tr>
<tr> <td colspan=1 rowspan=1 > 1977 </td><td colspan=1 rowspan=1 > Wings </td><td colspan=1 rowspan=1 > Kate Gaylion </td><td colspan=1 rowspan=1 > TV series (3 episodes) </td></tr>
<tr> <td colspan=1 rowspan=2 > 1982 </td><td colspan=1 rowspan=1 > For the Love of Egypt </td><td colspan=1 rowspan=1 > Kate Bradbury </td><td colspan=1 rowspan=1 > TV movie </td></tr>
<tr> <td colspan=1 rowspan=1 > Chronicle </td><td colspan=1 rowspan=1 > Kate Bradbury </td><td colspan=1 rowspan=1 > TV series documentary (1 episode: "For the Love of Egypt") </td></tr>
<tr> <td colspan=1 rowspan=1 > 1983 </td><td colspan=1 rowspan=1 > Biddy </td><td colspan=1 rowspan=1 > Biddy </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1985 </td><td colspan=1 rowspan=1 > Victoria Wood: As Seen on TV </td><td colspan=1 rowspan=1 > Pippa </td><td colspan=1 rowspan=1 > TV series (1 episode: "Episode #1.4") </td></tr>
<tr> <td colspan=1 rowspan=1 > 1987 </td><td colspan=1 rowspan=1 > Little Dorrit </td><td colspan=1 rowspan=1 > The Milliner </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1988 </td><td colspan=1 rowspan=1 > Screenplay </td><td colspan=1 rowspan=1 > Mrs. Ansell </td><td colspan=1 rowspan=1 > TV series (1 episode: "No Further Cause for Concern")- </td></tr>
<tr> <td colspan=1 rowspan=2 > 1992 </td><td colspan=1 rowspan=1 > As You Like It </td><td colspan=1 rowspan=1 > Celia </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Performance </td><td colspan=1 rowspan=1 > Miss Potter </td><td colspan=1 rowspan=1 > TV series (1 episode: "After the Dance") </td></tr>
<tr> <td colspan=1 rowspan=1 > 1998 </td><td colspan=1 rowspan=1 > The Land Girls </td><td colspan=1 rowspan=1 > District Commissioner </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 > Bad Girls </td><td colspan=1 rowspan=1 > Mrs. Fisk </td><td colspan=1 rowspan=1 > TV series (1 episode: "Episode #8.8") </td></tr>
<tr> <td colspan=1 rowspan=1 > 2007 </td><td colspan=1 rowspan=1 > Hindenburg </td><td colspan=1 rowspan=1 > Margaret Mather </td><td colspan=1 rowspan=1 > TV movie documentary </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > 14 Tagebücher des Ersten Weltkriegs </td><td colspan=1 rowspan=1 > Sarah Macnaughtan </td><td colspan=1 rowspan=1 > TV mini-series (2 episodes) </td></tr>
</table>
Question:
What roles did Celia Bannerman have in Pride and Prejudice, The Importance of Being Earnest , and Upstairs, Downstairs?
Answer:
Celia Bannerman played a television role as Elizabeth Bennet in Pride and Prejudice (1967), Cecily in The Importance of Being Earnest and Lady Diana Newbury in Upstairs, Downstairs.