I'm afraid to say I have blindly booked some expensive accommodation in Keswick next April.
Fortunately, following the sage advice of others, I have a contingency plan in the event of poor weather.
Route as follows:
The Wainwright, The Dog & Gun, Oddfellows Arms, The Royal Oak, The Chief Justice Of The Common Pleas, The Twa Dogs. 3 miles, 27m of ascent, 5-6 hours.