6.50 Ethnic Minorities: Punjab to Britain: 3

7.15 Urban/Rural Relationships

8.5 Decision-making in Britain

8.30 Computing: Top Down Design

8.55 Linear Programming

9.20 England is the Place for Me

9.45 Iteration and Convergence

10.10 Pure Maths: Functions

10.35 Maths: The Poisson Process

11.0 Technology: Invention is Not Enough

11.25 Sheffield: The Tertiary Debate

11.50 Power Plants of the Cell

12.15 pm The Acropolis of Athens

12.40 Language Development

1.5 Technology and Change

1.30 Food Production Systems

The new series, introduced by Desmond Lynam
Badminton
Horse Trials
Her Majesty the Queen will present the Whitbread Trophy after the show jumping not, for the seventh time, to LUCINDA GREEN, nee PRIOR-PALMER, but to any one of the best entry ever.
Commentators
RAYMOND BROOKS-WARD
MICHAEL TUCKER
HUGH THOMAS , LUCINDA GREEN
Motor Racing
The Portuguese Grand Prix MURRAY WALKER and JAMES HUNT , after their arduous trip to Rio, chase the pantechnicons and mobile homes to Iberia.
Snooker
Embassy World Professional Championship
Suitably rested, fed and watered, off we go again. You do realise it's been almost 11 hours since the last snooker was on? Come on, concentrate. The commentators, if unmoved, remain interchangeable.
Highlights too of the gruelling Paris-Roubaix cycle race and the London Marathon, which should be over for almost everyone by Songs of Praise. Television presentation:
Horse Trials JOHNNIE WATHERSTON
ALASTAIR SCOTT Motor Racing
PORTUGUESE TV SERVICE Snooker NICK HUNTER
Assistant editor
Grandstand BRIAN BARWICK
Producer Grandstand MARTIN HOPKINS
Editor Grandstand JOHN rtnuPS

Moira Stuart looks at the best news pictures of the week. With subtitles. Editor BOB MCDOUGALL

The Embassy
World Professional Snooker Championship from the Crucible Theatre, Sheffield Tenth day
The forecast for this afternoon's session was that the three major players from Canada, CLIFF THORBURN , KIRK STEVENS and BILL WERBENIUK should be continuing their second-round matches together with 1977 World Champion JOHN SPENCER , who will be aiming to break his run of five second-round defeats in this championship since 1980.
Introduced by DAVID VINE Book, Pot Black 1985, £2.95 from booksellers BBC videos:
Snooker Century Breakers: from Joe Davis to Cliff Thorburn , BBCV/B 5022
The People's Champion: The 1982 World Professional Championship, BBCV/B 5017 from retailers

starring
Robert Mitchum
Marilyn Monroe with Rory Calhoun
Widower Matt Calder and his young son are hard at work developing a farm on the borders of the River of No Return when into their lives come a young saloon singer and her gambler husband.
Monroe as the bar room entertainer is a perfect match for the laconic Mitchum in this rugged adventure set at the time of the 1875 gold rush, and filmed amidst spectacular Canadian scenery.
Screenplay by FRANK FENTON from a story by LOUIS LANTZ Produced by STANLEY RUBIN Directed by OTTO PREMINGER
(Postponed from Sunday, 31 March)
• FILMS: page 23

The Embassy
World Professional Snooker Championship from the Crucible Theatre, Sheffield Tenth day
The chances are that the Canadian contingent will be completing their second-round matches this evening, and the '147 kings'
CLIFF THORBURN and KIRK STEVENS are firm favourites for the quarter-final stage. Commentators
TED LOWE
JACK KARNEHM
CLIVE EVERTON
Introduced by DAVID VINE

Dramatised in eight episodes by ARTHUR HOPCRAFT starring
Diana Rigg
Denholm Elliott
2: The mysterious law-writer Nemo has been found dead in his lodgings; Lady Dedlock has taken an interest in his identity and her lawyer,
Tulkinghorn, is investigating. Esther has been entrusted with the running of Bleak House by her guardian, John Jarndyce.
*CEEFAX SUBTITLES

Six months ago today Niki Lauda won the World Championship at Estoril. He beat his McLaren team mate Alain Prost by half a point. As the Formula One cars return to this coastal 2.7 mile track, every team will want to break McLaren's stranglehold on the Grand Prix circuits. The first race of the season two weeks ago in Brazil provided a pointer for things to come.
Television presentation RTP

The Embassy
World Professional Snooker Championship from the Crucible Theatre, Sheffield Tenth day
DAVID VINE introduces late-night highlights and results of this evening's second-round matches.