Tiger was placed in reserve on 18 December 1966, before undergoing conversion to a "helicopter and command cruiser" from 1968–72 in HMNB Devonport.
 This reconstruction included removing the after 6 inch mount and 3 inch mounts, installing two Seacat GWS 22 mounts, and building a flight deck and hangar to operate four Wessex (and later Sea King HAS 2) helicopters.
The  Tiger was given much taller funnels with squared off caps, which was such an improvement that the Blake was given similar funnels in 1977.

Once converted, the Tiger carried:
a Type 992Q surface search radar at the top of the foremast, with a range of 30 nautical miles (56 km),
a Type 965M air warning radar with an AKE-1 single bedstead aerial at the top of the mainmast, this had a narrower beam than the Type 960, which was needed for air direction and was now the Royal Navy standard.

a Type 278 height-finding radar halfway up the mainmast, which was similar to the Type 277Q, but easier to maintain,
four MRS 3 fire control directors (one for each turret and Seacat mounting, each fitted with a Type 903 gunnery radar.

She had excellent command, control, and communications facilities installed, and found use as a flagship to task groups.

When plans were announced to Parliament in March 1964, it was said that the Navy did "not expect this conversion work to be difficult or particularly expensive".
The reconstruction of Blake and Tiger was examined in the third report of the Public Accounts Committee for 1972.
 Michael Barnes said in parliament that the refits "show too lax an attitude towards the way in which the taxpayers' money is being spent".
 "The refits were planned to take 18 months and to cost £5 million each... The Tiger refit took over five years and cost over £13 million."
  Rear-Admiral Morgan-Giles suggested bringing HMS Eagle back into commission instead of manning the Blake and Tiger, which he said were "among the worst abortions which have ever been thrust on the Royal Navy."

The ship's helicopter squadron increased the ship's peacetime complement to 885 (85 officers and 800 ratings), which put a strain on accommodation for the crew.

During reconstruction and in the following years, material cannibalised from Lion was used to patch both Tiger and Blake.
Tiger reportedly had so much material from Lion that her crew nicknamed her "HMS Liger".

She was recommissioned on 6 May 1972.
Her large crew made her an expensive ship to operate and maintain.
When the economic difficulties of the late seventies came around, this led to a defence manpower drawdown that resulted in manpower shortages; although Tiger remained in service long enough to take part in the 1977 Silver Jubilee Fleet Review in celebration of Queen Elizabeth II.
Tiger was placed in reserve on 18 December 1966, before undergoing conversion to a "helicopter and command cruiser" from 1968–72 in HMNB Devonport.  This reconstruction included removing the after 6 inch mount and 3 inch mounts, installing two Seacat GWS 22 mounts, and building a flight deck and hangar to operate four Wessex (and later Sea King HAS 2) helicopters. The  Tiger was given much taller funnels with squared off caps, which was such an improvement that the Blake was given similar funnels in 1977.
Once converted, the Tiger carried:
a Type 992Q surface search radar at the top of the foremast, with a range of 30 nautical miles (56 km),
a Type 965M air warning radar with an AKE-1 single bedstead aerial at the top of the mainmast, this had a narrower beam than the Type 960, which was needed for air direction and was now the Royal Navy standard.
a Type 278 height-finding radar halfway up the mainmast, which was similar to the Type 277Q, but easier to maintain,
four MRS 3 fire control directors (one for each turret and Seacat mounting, each fitted with a Type 903 gunnery radar.
She had excellent command, control, and communications facilities installed, and found use as a flagship to task groups.
When plans were announced to Parliament in March 1964, it was said that the Navy did "not expect this conversion work to be difficult or particularly expensive". The reconstruction of Blake and Tiger was examined in the third report of the Public Accounts Committee for 1972.  Michael Barnes said in parliament that the refits "show too lax an attitude towards the way in which the taxpayers' money is being spent".  "The refits were planned to take 18 months and to cost £5 million each... The Tiger refit took over five years and cost over £13 million."   Rear-Admiral Morgan-Giles suggested bringing HMS Eagle back into commission instead of manning the Blake and Tiger, which he said were "among the worst abortions which have ever been thrust on the Royal Navy."
The ship's helicopter squadron increased the ship's peacetime complement to 885 (85 officers and 800 ratings), which put a strain on accommodation for the crew.
During reconstruction and in the following years, material cannibalised from Lion was used to patch both Tiger and Blake. Tiger reportedly had so much material from Lion that her crew nicknamed her "HMS Liger".
She was recommissioned on 6 May 1972. Her large crew made her an expensive ship to operate and maintain. When the economic difficulties of the late seventies came around, this led to a defence manpower drawdown that resulted in manpower shortages; although Tiger remained in service long enough to take part in the 1977 Silver Jubilee Fleet Review in celebration of Queen Elizabeth II.
HMS Tiger (C20)