Brian Hambleton lost his sister Maxine in the Birmingham Pub Bombings in 1974.
He will be protesting tonight outside a lecture delivered by Martin McGuinness, the Deputy First Minister of Northern Ireland.
The lecture is being held at a Peace Centre in Warrington, set up by the parents of a 12-year-old boy killed in an IRA attack.
Mr Hambleton has campaigned ever since the atrocity to bring the killers to justice.
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After a fine evening with some late sunshine to the end the day, a largely dry and fairly warm night will follow with clear spells.
Any remaining showers will fade, to leave it dry overnight.
There are reports that 15 people have been injured in a bus crash in France. The coach was taking a school group to Italy.