The line has now re-opened but currently tickets can still be used at no extra cost on:
London Underground services on any reasonable route across London, including:
The Victoria line, connecting London Euston, Oxford Circus and London Victoria.
The Bakerloo line, connecting Harrow & Wealdstone, Wembley Central, Willesden Junction and Oxford Circus.
The District line, connecting West Brompton and London Victoria, as well as a limited service to / from Kensington Olympia.
The Central line, connecting Shepherds Bush and Oxford Circus.
The Metropolitan line, connecting Watford and London Kings Cross St Pancras - Watford is just over 30 minutes walk from Watford Junction.
OR trains to Victoria then any reasonable Underground/Overground route as above
OR on Thameslink to St Alban's City then 20 to 25 minute walk then LNWR St Alban's City to Watford Junction
OR Chiltern from Marylebone to Wembley Stadium then 12 minute walk to the Overground from Wembley Central to Watford Junction
OR London Buses on any reasonable route
The first train scheduled to run through the area will depart Clapham Junction at 14:41 and arrive at Watford Junction at 15:25.
The first train scheduled to run from Watford Junction towards East Croydon will depart Watford Junction at 15:52.
London Overground services between Shepherds Bush and Willesden Junction on the Clapham Junction to Stratford route are still suspended at the time of writing.