Series 4
Episodes
1 Episode 223 (Mon 6th Jan 1975) Jan 6, 1975 2 Episode 224 (Tues 7th Jan 1975) Jan 7, 1975 3 Episode 225 (Mon 13th Jan 1975) Jan 13, 1975 4 Episode 226 (Tue 14th Jan 1975) Jan 14, 1975 5 Episode 227 (Mon 20th Jan 1975) Jan 20, 1975 6 Episode 228 (Tue 21st Jan 1975) Jan 21, 1975 7 Episode 229 (Mon 27th Jan 1975) Jan 27, 1975 8 Episode 230 (Tue 28th Jan 1975) Jan 28, 1975 9 Episode 231 (Mon 3rd Feb 1975) Feb 3, 1975 10 Episode 232 (Tue 4th Feb 1975) Feb 4, 1975 11 Episode 233 (Mon 10th Feb 1975) Feb 10, 1975 12 Episode 234 (Tue 11th Feb 1975) Feb 11, 1975 13 Episode 235 (Mon 17th Feb 1975) Feb 17, 1975 14 Episode 236 (Tue 18th Feb 1975) Feb 18, 1975 15 Episode 237 (Mon 24th Feb 1975) Feb 24, 1975 16 Episode 238 (Tue 25th Feb 1975) Feb 25, 1975 17 Episode 239 (Mon 3rd March 1975) Mar 3, 1975 18 Episode 240 (Tues 4th March 1975) Mar 4, 1975 19 Episode 241 (Mon 10th March 1975) Mar 10, 1975 20 Episode 242 (Tue 11th March 1975) Mar 11, 1975 21 Episode 243 (Mon 17th March 1975) Mar 17, 1975 22 Episode 244 (Tue 18th March 1975) Mar 18, 1975 23 Episode 245 (Mon 24th March 1975) Mar 24, 1975 24 Episode 246 (Tue 25th March 1975) Mar 25, 1975 25 Episode 247 (Mon 7th April 1975) Apr 7, 1975 26 Episode 248 (Tue 8th April 1975) Apr 8, 1975 27 Episode 249 (Mon 14th April 1975) Apr 14, 1975 28 Episode 250 (Tue 15th April 1975) Apr 15, 1975 29 Episode 251 (Mon 21st April 1975) Apr 21, 1975 30 Episode 252 (Tue 22nd April 1975) Apr 22, 1975 31 Episode 253 (Mon 28th April 1975) Apr 28, 1975 32 Episode 254 (Tue 29th April 1975) Apr 29, 1975 33 Episode 255 (Mon 5th May 1975) May 5, 1975 34 Episode 256 (Tue 6th May 1975) May 6, 1975 35 Episode 257 (Mon 12th May 1975) May 12, 1975 36 Episode 258 (Tue 13th May 1975) May 13, 1975 37 Episode 259 (Mon 19th May 1975) May 19, 1975 38 Episode 260 (Tue 20th May 1975) May 20, 1975 39 Episode 261 (Mon 13th Oct 1975) Oct 13, 1975 40 Episode 262 (Tue 14th Oct 1975) Oct 14, 1975 41 Episode 263 (Mon 20th Oct 1975) Oct 20, 1975 42 Episode 264 (Tue 21st Oct 1975) Oct 21, 1975 43 Episode 265 (Mon 27th Oct 1975) Oct 27, 1975 44 Episode 266 (Tue 28th Oct 1975) Oct 28, 1975 45 Episode 267 (Mon 3rd Nov 1975) Nov 3, 1975 46 Episode 268 (Tue 4th Nov 1975) Nov 4, 1975 47 Episode 269 (Mon 10th Nov 1975) Nov 10, 1975 48 Episode 270 (Tue 11th Nov 1975) Nov 11, 1975 49 Episode 271 (Mon 17th Nov 1975) Nov 17, 1975 50 Episode 272 (Tue 18th Nov 1975) Nov 18, 1975 51 Episode 273 (Mon 24th Nov 1975) Nov 24, 1975 52 Episode 274 (Tue 25th Nov 1975) Nov 25, 1975 53 Episode 275 (Mon 1st Dec 1975) Dec 1, 1975 54 Episode 276 (Tue 2nd Dec 1975) Dec 2, 1975 55 Episode 277 (Mon 8th Dec 1975) Dec 8, 1975 56 Episode 278 (Tue 9th Dec 1975) Dec 9, 1975 57 Episode 279 (Mon 15th Dec 1975) Dec 15, 1975 58 Episode 280 (Tue 16th Dec 1975) Dec 16, 1975 59 Episode 281 (Mon 22nd Dec 1975) Dec 22, 1975 60 Episode 282 (Tue 23rd Dec 1975) Dec 23, 1975 61 Episode 283 (Mon 29th Dec 1975) Dec 29, 1975 62 Episode 284 (Tue 30th Dec 1975) Dec 30, 1975