We used Colwick travel to assist with our Ireland-England trip in July.
They in turn leveraged Brendan Vacations for the Ireland portion. Brendan seems well known and respected and our trip went off without any hitches or glitches.
In England, we used Colwick for the hotel booking only and that was not particularly necessary. What was awesome though was our booking private tours with Luxury Vacations UK for London day tours, a specialized tour to Glastonbury, Avebury and Stonehenge, and the best experience ever at the British Museum.
Happy to share more if interested.
"The absence of the word accountability is not the same as wanting no accountability" -unknown
"You can never go wrong by staying silent if there is nothing apt to say" -Walter Isaacson