300–399
| Route | Start | End | Operator | Performance |
| 300 | Canning Town | East Ham | Go-Ahead London | |
| 302 | Kensal Rise | Mill Hill | Metroline | |
| 303 | Colindale | Edgware | Arriva Shires & Essex | |
| 305 | Kingsbury | Edgware | Arriva Shires & Essex | |
| 307 | Barnet | Brimsdown | Arriva London | |
| 308 | Clapton Park | Wanstead | Tower Transit | |
| 309 | London Chest Hospital | Canning Town | CT Plus | |
| 312 | Norwood Junction | South Croydon | Arriva London | |
| 313 | Chingford | Potters Bar † | Arriva London | |
| 314 | Eltham Station | New Addington | Stagecoach London | |
| 315 | Balham | West Norwood | Go-Ahead London | |
| 316 | White City | Cricklewood | Metroline | |
| 317 | Enfield | Waltham Cross † | Arriva Shires & Essex | |
| 318 | North Middlesex Hospital | Stamford Hill | Arriva London | |
| 319 | Sloane Square | Streatham Hill | Arriva London | |
| 320 | Catford Bridge Station | Biggin Hill | Metrobus | |
| 321 | New Cross | Foots Cray | Go-Ahead London | |
| 322 | Clapham Common | Crystal Palace | Abellio London | |
| 323 | Mile End | Canning Town | Stagecoach London | |
| 324 | Stanmore | Brent Cross Tesco | London Sovereign | |
| 325 | Prince Regent Station | East Beckton | Arriva London | |
| 326 | Brent Cross | Barnet | Metroline | |
| 327 | Waltham Cross † | Circular route via Elsinge Estate and Turkey Street | Go-Ahead London | |
| 328 | Chelsea | Golders Green | Tower Transit | |
| 329 | Turnpike Lane | Enfield | Arriva London | |
| 330 | Canning Town | Wanstead Park Station | Stagecoach London | |
| 331 | Ruislip | Uxbridge | Metroline | |
| 332 | Brent Park | Paddington | Metroline | |
| 333 | Elephant & Castle Station | Tooting | Go-Ahead London | |
| 336 | Catford | Locksbottom | Metrobus | |
| 337 | Clapham Junction Station | Richmond | Go-Ahead London | |
| 339 | Shadwell | Stratford City | Tower Transit | |
| 340 | Edgware | Harrow Bus Station | Arriva Shires & Essex | |
| 341 | County Hall | Lea Valley Tesco | Arriva London | |
| 343 | London Bridge Station | New Cross Gate | Abellio London | |
| 344 | Liverpool Street Station | Clapham Junction Station | Abellio London | |
| 345 | South Kensington | Peckham | Go-Ahead London | |
| 346 | Upminster | Upminster Park Estate | Arriva Southern Counties | |
| 347 | Romford | Ockendon Station † | Go-Ahead London | |
| 349 | Stamford Hill | Ponders End | Arriva London | |
| 350 | Hayes | Heathrow Airport, Terminal 5 | Abellio London | |
| 352 | Lower Sydenham | Bromley North | Metrobus | |
| 353 | Addington Village Interchange | Ramsden Estate | Metrobus | |
| 354 | Penge | Bromley North Station | Stagecoach London | |
| 355 | Brixton | Mitcham | Go-Ahead London | |
| 356 | Upper Sydenham | Shirley | Stagecoach London | |
| 357 | Whipps Cross University Hospital (Sundays) Whipps Cross |
Chingford Hatch | Go-Ahead London | |
| 358 | Crystal Palace | Orpington Station | Metrobus | |
| 359 | Addington Village Interchange | Selsdon | Metrobus | |
| 360 | Elephant & Castle Station | Royal Albert Hall | Go-Ahead London | |
| 362 | King George Hospital | Grange Hill † | Go-Ahead London | |
| 363 | Elephant & Castle Station | Crystal Palace | Go-Ahead London | |
| 364 | Ilford | Dagenham East | Go-Ahead London | |
| 365 | Mardyke Estate | Havering Park | irst Capital (Stagecoach London from 28 September 2013) | |
| 366 | Beckton Bus Station | Redbridge | Stagecoach London | |
| 367 | Bromley North Station | West Croydon | Metrobus | |
| 368 | Barking | Chadwell Heath | Go-Ahead London | |
| 370 | Romford | Lakeside † | Arriva Southern Counties | |
| 371 | Richmond | Kingston | London United | |
| 372 | Hornchurch | Lakeside † | Stagecoach London | |
| 375 | Romford Station | Passingford Bridge | Arriva Southern Counties | |
| 376 | Beckton | East Ham | Go-Ahead London | |
| 377 | Ponders End | Oakwood | Arriva London | |
| 379 | Chingford | Yardley Lane Estate | Arriva London | |
| 380 | Lewisham | Belmarsh Prison | Stagecoach London | |
| 381 | County Hall | Peckham | Abellio London | |
| 382 | Southgate | Mill Hill East | Arriva London | |
| 383 | Barnet | Woodside Park Station | Metroline | |
| 384 | Barnet | Cockfosters | Metroline | |
| 385 | Chingford Station | South Chingford | CT Plus | |
| 386 | Blackheath Village | Woolwich | Stagecoach London | |
| 387 | Barking Reach Creekmouth |
King George Hospital | Stagecoach London | |
| 388 | Blackfriars | Hackney Wick | CT Plus | |
| 389 | Barnet | Circular via Western Way | Go-Ahead London | |
| 390 | Notting Hill Gate | Archway | Metroline | |
| 391 | Sands End | Richmond | London United | |
| 393 | Chalk Farm | Clapton | Arriva London | |
| 394 | Islington Police Station | Homerton University Hospital | CT Plus | |
| 395 | Westway Cross Retail Park | Harrow Bus Station | Metroline | |
| 396 | Ilford | King George Hospital | Stagecoach London | |
| 397 | South Chingford | Debden † | Arriva London | |
| 398 | Ruislip | Wood End | London Sovereign | |
| 399 | Barnet | Circular via Hadley Wood Station | Go-Ahead London |
Read more about this topic: London Buses Route 299, List of Routes