My dear K,
I am coming back to London for two weeks before leaving for Switzerland. It would be very nice to catch a glimpse of you and M if possible.
I hope it will fit in with your plans if I have P in London for the weekend of 26th./27th. I shall collect him on Saturday afternoon and return him on Sunday evening.
I am due to arrive on March 20th. and shall give you a ring soon afterwards.
With all good wishes to you both