Here are the dates for the three major parties and some others in the period 8 September to 20 October:
- Trades Union Congress – 8 to 11 September, in Bournemouth
- Green Party of England and Wales – 13 to 16 September, in Brighton
- Liberal Democrats – 14 to 18 September, in Glasgow
- UKIP – 20 to 21 September, in London
- Labour– 22 to 25 September, in Brighton
- Conservatives – 29 September to 2 October, in Birmingham
- Plaid Cymru – 11 to 12 October, in Aberystwyth
- Scottish National Party – 17 to 20 October, in Perth
With acknowledgements to Wikipedia.